diff --git a/.gitignore b/.gitignore
index 96fd286..481d9da 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,6 +30,7 @@ docs/_build
 docs/_static
 docs/templates
 .coverage
+.pytest_cache/
 
 # changes during CD/CI
 aliases/*/pyproject.toml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0734c65..7cccb6b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## 0.14.0
+
+* Added `ast` module
+* Deprecate `dei_args()` for problems with the typing system. The function is not going away tho
+* Module `sqlalchemy`: added `email_column()`
+
+## 0.13.1 and 0.12.7
+
++ Typing fixes
+
+## 0.13.0 "Laconic Letters"
+
++ Added module `argparse` with class `LetterSubparsers()`, which allows pacman-style args by preprocessing them
+  before feeding them to parse_args
++ Module `sqlalchemy`: 
+    * removed deprecated alias `entity_base()`. use `declarative_base()` instead.
+    * fix imports.
++ Module `functools`: add `cooldown()`, `do_not_flood()`
++ Module `color`: add `ColorFormatter()`
++ Separated `suou[waiter]` dependency from `suou[quart]`
+
 ## 0.12.6
 
 + Added unittests to `dei_args()`
diff --git a/README.md b/README.md
index 447a9b7..27dabec 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # SIS Unified Object Underarmor
 
-Good morning, my brother! Welcome **SUOU** (**S**IS **U**nified **O**bject **U**nderarmor), the Python library which speeds up and makes it pleasing to develop API, database schemas and stuff in Python.
+Good morning, my brother! Welcome **SUOU** (**S**IS **U**nified **O**bject **U**nderarmor), the Python library which (maybe) speeds up and makes it pleasing to develop API, database schemas and stuff in Python.
 
 It provides utilities such as:
 * SIQ ([specification](https://yusur.moe/protocols/siq.html) \[LINK BROKEN - WON'T FIX\] - [copy](https://suou.readthedocs.io/en/latest/iding.html)) 
@@ -15,13 +15,13 @@ It provides utilities such as:
 **Python 3.10**+ with Pip is required.
 
 ```bash
-$ pip install sakuragasaki46-suou
+$ pip install suou
 ```
 
 To install optional dependencies (i.e. `sqlalchemy`) for development use:
 
 ```bash
-$ pip install sakuragasaki46-suou[sqlalchemy]
+$ pip install suou[sqlalchemy]
 ```
 
 Please note that you probably already have those dependencies, if you just use the library.
@@ -34,7 +34,7 @@ Read the [documentation](https://suou.readthedocs.io/).
 
 ### Disclaimer
 
-Just a heads up: SUOU was made to support Sakuragasaki46 (me)'s own selfish, egoistic needs. Not certainly to provide a service to the public.
+Just a heads up: SUOU was made to support yusurko (me)'s own selfish, egoistic needs. Not certainly to provide a service to the public.
 
 As a consequence, 'add this add that' stuff is best-effort.
 
@@ -42,8 +42,6 @@ Expect breaking changes, disruptive renames in bugfix releases, sudden deprecati
 
 Don't want to depend on my codebase for moral reasons (albeit unrelated)? It's fine. I did not ask you.
 
-**DO NOT ASK TO MAKE SUOU SAFE FOR CHILDREN**. Enjoy having your fingers cut.
-
 ### "LTS"
 
 The following versions are supported: the latest, the second-to-latest, 0.12.x and 0.7.x.
@@ -54,7 +52,7 @@ Licensed under the [Apache License, Version 2.0](LICENSE), a non-copyleft free a
 
 This is a hobby project, made available “AS IS”, with __no warranty__ express or implied.
 
-I (sakuragasaki46) may NOT be held accountable for Your use of my code.
+I (yusurko) may NOT be held accountable for Your use of my code.
 
 > It's pointless to file a lawsuit because you feel damaged, and it's only going to turn against you. What a waste of money you could have spent on a vacation or charity, or invested in stocks.
 
diff --git a/pyproject.toml b/pyproject.toml
index 5375510..0982b7e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,7 +56,9 @@ markdown = [
 ]
 quart = [
     "Quart",
-    "Quart-Schema",
+    "Quart-Schema"
+]
+waiter = [
     "starlette>=0.47.2"
 ]
 quart_auth = [
@@ -78,7 +80,8 @@ full = [
     "suou[quart_auth]", # includes quart, sqlalchemy and quart_sqlalchemy
     "suou[peewee]",
     "suou[markdown]",
-    "suou[sass]"
+    "suou[sass]",
+    "suou[waiter]"
 ]
 
 docs = [
diff --git a/src/suou/__init__.py b/src/suou/__init__.py
index 6a434e4..d7d1720 100644
--- a/src/suou/__init__.py
+++ b/src/suou/__init__.py
@@ -18,13 +18,14 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 
 from .iding import Siq, SiqCache, SiqType, SiqGen
 from .codecs import (StringCase, cb32encode, cb32decode, b32lencode, b32ldecode, b64encode, b64decode, b2048encode, b2048decode,
-    jsonencode, twocolon_list, want_bytes, want_str, ssv_list, want_urlsafe, want_urlsafe_bytes)
+    jsonencode, twocolon_list, want_bytes, want_str, ssv_list, want_urlsafe, want_urlsafe_bytes,
+    z85encode, z85decode)
 from .bits import count_ones, mask_shift, split_bits, join_bits, mod_ceil, mod_floor
 from .calendar import want_datetime, want_isodate, want_timestamp, age_and_days
 from .configparse import MissingConfigError, MissingConfigWarning, ConfigOptions, ConfigParserConfigSource, ConfigSource, DictConfigSource, ConfigValue, EnvConfigSource
 from .collections import TimedDict
 from .dei import dei_args
-from .functools import deprecated, not_implemented, timed_cache, none_pass, alru_cache, future
+from .functools import deprecated, not_implemented, timed_cache, none_pass, alru_cache, future, cooldown, do_not_flood
 from .classtools import Wanted, Incomplete
 from .itertools import makelist, kwargs_prefix, ltuple, rtuple, additem, addattr
 from .i18n import I18n, JsonI18n, TomlI18n
@@ -32,18 +33,21 @@ from .signing import UserSigner
 from .snowflake import Snowflake, SnowflakeGen
 from .lex import symbol_table, lex, ilex
 from .strtools import PrefixIdentifier
-from .validators import matches, not_less_than, not_greater_than, yesno
+from .validators import matches, not_less_than, not_greater_than, yesno, must_be
 from .redact import redact_url_password
 from .http import WantsContentType
-from .color import OKLabColor, chalk, WebColor, RGBColor, LinearRGBColor, XYZColor, OKLCHColor
+from .color import OKLabColor, chalk, WebColor, RGBColor, LinearRGBColor, \
+        XYZColor, OKLCHColor, ColorFormatter
 from .mat import Matrix
+from .argparse import LetterSubparsers
 
-__version__ = "0.12.6"
+__version__ = "0.14.0a1"
 
 __all__ = (
+    'ColorFormatter',
     'ConfigOptions', 'ConfigParserConfigSource', 'ConfigSource', 'ConfigValue',
     'DictConfigSource', 'EnvConfigSource', 'I18n', 'Incomplete', 'JsonI18n',
-    'LinearRGBColor',
+    'LetterSubparsers', 'LinearRGBColor',
     'Matrix', 'MissingConfigError', 'MissingConfigWarning', 'OKLabColor', 'OKLCHColor',
     'PrefixIdentifier', 'RGBColor',
     'Siq', 'SiqCache', 'SiqGen', 'SiqType', 'Snowflake', 'SnowflakeGen',
@@ -51,9 +55,9 @@ __all__ = (
     'WebColor', 'XYZColor',
     'addattr', 'additem', 'age_and_days', 'alru_cache', 'b2048decode', 'b2048encode',
     'b32ldecode', 'b32lencode', 'b64encode', 'b64decode', 'cb32encode',
-    'cb32decode', 'chalk', 'count_ones', 'dei_args', 'deprecated',
-    'future', 'ilex', 'join_bits',
-    'jsonencode', 'kwargs_prefix', 'lex', 'ltuple', 'makelist', 'mask_shift',
+    'cb32decode', 'chalk', 'cooldown', 'count_ones', 'dei_args', 'deprecated', 'do_not_flood',
+    'future', 'ilex', 'join_bits', 'jsonencode', 'kwargs_prefix', 
+    'lex', 'ltuple', 'makelist', 'mask_shift',
     'matches', 'mod_ceil', 'mod_floor', 'must_be', 'none_pass', 'not_implemented',
     'not_less_than', 'not_greater_than',
     'redact_url_password', 'rtuple', 'split_bits', 'ssv_list', 'symbol_table',
diff --git a/src/suou/argparse.py b/src/suou/argparse.py
new file mode 100644
index 0000000..9f1bf50
--- /dev/null
+++ b/src/suou/argparse.py
@@ -0,0 +1,140 @@
+"""
+Utilities for parsing arguments. Based on argparse.
+
+---
+
+Copyright (c) 2025 Sakuragasaki46.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+See LICENSE for the specific language governing permissions and
+limitations under the License.
+
+This software is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+"""
+
+
+from __future__ import annotations
+
+import argparse
+import sys
+from typing import Callable
+
+class LetterSubparsers(object):
+    """
+    Subparsers in pacman style, where action name can be shortened to a single letter, prefixed by a hyphen
+
+    (i.e. "-S" is expanded to "sync")
+
+    *New in 0.13.0*
+    """
+
+    _parser: argparse.ArgumentParser
+    _letters: dict[str, str]
+    _subparsers: argparse._SubParsersAction[argparse.ArgumentParser]
+    _has_verbose: bool = False
+
+    def __init__(self, parser : argparse.ArgumentParser, *, dest: str = 'action', **kwargs):
+        self._parser = parser
+        self._letters = {}
+        self._subparsers = parser.add_subparsers(dest = dest, required = True, **kwargs)
+
+    def add_verbose(self, *, help: str = "show more logs (e.g. debug)"):
+        """
+        Add a "-v" / "--verbose" argument to the main parser.
+
+        This allows the argument to be everywhere in the argv.
+        """
+        self._parser.add_argument('-v', '--verbose', action='count', default = 0, help=help)
+        self._has_verbose = True
+
+    def action(self, /, letter: str, name: str | None = None, **kwargs):
+        """
+        Decorator which adds a subparser of an argument parser's subparsers, and specifies a letter to make a shorthand in pacman style.
+
+        For example, assuming name="sync" and letter="S", if the first argument is "-S", it will be turned to "sync", .
+
+        The first argument is always the object returned by ArgumentParser.add_subparsers().
+
+        Additional kwargs are passed to the add_parser constructor.
+        """
+
+        if len(letter) != 1:
+            raise ValueError('letter must be one character')
+
+        o_name = name
+
+        def decorator(func: Callable[argparse.ArgumentParser, ...]):
+            name = o_name or func.__name__
+            parser = self._subparsers.add_parser(name, **kwargs)
+            func(parser)
+
+            self._letters[letter] = name
+
+            return func
+        return decorator
+
+    def parse_args(self, argv: list[str] = None, system_exit: bool = True):
+        """
+        Variation of ArgumentParser.parse_args() that takes shortcut letters into account.
+
+        Best used together with .action().
+        """
+        
+        if argv is None:
+            argv = sys.argv[1:]
+        else:
+            argv = list(argv)
+
+        opt_start = 0
+
+        # preprocess the letters
+        if len(argv) > 0:
+            first_arg = argv.pop(0)
+            
+            if first_arg.startswith('-') and len(first_arg) >= 2:
+                for idx, letter in enumerate(first_arg):
+                    rest = first_arg[1:idx] + first_arg[idx+1:]
+                    if letter in self._letters:
+                        argv.insert(0, self._letters[letter])
+                        if rest:
+                            argv.insert(1, "-" + rest)
+                        opt_start = 1
+                        break
+                else:
+                    # put it back
+                    argv.insert(0, first_arg)
+            else:
+                # put it back
+                argv.insert(0, first_arg)
+
+        # preprocess the verbose
+        if self._has_verbose and len(argv) > opt_start:
+            nargv = argv[:opt_start]
+            vc = 0
+            for arg in argv[opt_start:]:
+                if arg.startswith('-') and not arg.startswith('--'):
+                    arg_vc = sum(1 for l in arg[1:] if l == 'v')
+                    arg_vless = arg.replace('v', '')
+                    if arg_vless != '-':
+                        nargv.append(arg_vless)
+                    vc += arg_vc
+                elif arg == '--verbose':
+                    vc += 1
+                else:
+                    nargv.append(arg)
+            argv = ["--verbose"] * vc + nargv
+        
+        try:
+            args = self._parser.parse_args(argv)
+        except SystemExit:
+            # prevent SystemExit at parse fail
+            if system_exit:
+                raise
+        else:
+            return args
+
+
+__all__ = ('LetterSubparsers',)
+
diff --git a/src/suou/ast.py b/src/suou/ast.py
new file mode 100644
index 0000000..c6b744d
--- /dev/null
+++ b/src/suou/ast.py
@@ -0,0 +1,116 @@
+"""
+Experimental AST module
+
+---
+
+Copyright (c) 2026 Sakuragasaki46.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+See LICENSE for the specific language governing permissions and
+limitations under the License.
+
+This software is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+"""
+
+from __future__ import annotations
+from ast import TypeVar
+from typing import Any, Collection
+
+_T = TypeVar('_T')
+
+class Node:
+    __slots__ = ('_children', )
+
+    _count: int
+    _children: list[Node]
+    _types: Collection[type]
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({', '.join(repr(x) for x in self._children)})"
+
+    def __init__(self, *args):
+        if self._count != len(args):
+            raise TypeError(f'{self.__class__.__name__} must be instanced with {self._count} arguments, got {len(args)}')
+
+        for i, (a, t) in enumerate(zip(args, self._types)):
+            if t != Any and not isinstance(a, t):
+                raise TypeError(f"argument {i} must be of type {t.__name__!r}, got {a.__class__.__name__!r}")
+
+        self._children = list(args)
+
+    def eval(self, ctx: dict):
+        raise TypeError(f'{self.__class__.__name__} cannot be eval()ed')
+
+    def __getitem__(self, key: int):
+        if key >= self._count:
+            raise IndexError('child node index out of range')
+        return self._children[key]
+
+    def __len__(self):
+        return self._count
+
+
+class ZeroOp(Node):
+    _count = 0
+    _types = ()
+
+
+class UnaryOp(Node):
+    _count = 1
+    _types = (Any,)
+    
+
+class BinaryOp(Node):
+    _count = 2
+    _types = (Any, Any)
+
+
+class TernaryOp(Node):
+    _count = 3
+    _types = (Any, Any, Any)
+
+
+class MultiOp(Node):
+    _count = 1
+    _types = (list,)
+
+    def __getitem__(self, key: int):
+        return self._children[0][key]
+
+    def __iter__(self):
+        return iter(self._children[0])
+
+    def __len__(self):
+        return len(self._children[0])
+
+
+
+class Literal(UnaryOp):
+    """A literal evals to the enclosed value."""
+    def eval(self, ctx: dict):
+        return self[0]
+
+
+## SUOU provides some ready-made literals, for the sake of ease-of-use.
+
+class IntLiteral(Literal):
+    _types = (int,)
+
+class FloatLiteral(Literal):
+    """
+    WARNING: may be subject to loss of precision.
+    """
+    _types = (float,)
+
+class StringLiteral(Literal):
+    _types = (str,)
+
+
+# This module is experimental and therefore not re-exported into __init__
+__all__ = (
+    'Node', 'ZeroOp', 'UnaryOp', 'BinaryOp', 'TernaryOp',
+    'MultiOp', 'Literal', 'IntLiteral', 'FloatLiteral',
+    'StringLiteral'
+)
\ No newline at end of file
diff --git a/src/suou/color.py b/src/suou/color.py
index 26bf060..5755a9c 100644
--- a/src/suou/color.py
+++ b/src/suou/color.py
@@ -21,6 +21,7 @@ from __future__ import annotations
 
 from collections import namedtuple
 from functools import lru_cache
+import logging
 import math
 
 from suou.functools import deprecated
@@ -331,4 +332,48 @@ class OKLCHColor(namedtuple('_OKLCHColor', 'l c h')):
         return sum(abs(i - j) / k for i, j, k in zip(self, other, (1, 1, 36)))
 
 
-__all__ = ('chalk', 'WebColor', "RGBColor", 'LinearRGBColor', 'XYZColor', 'OKLabColor', 'OKLCHColor')
+class ColorFormatter(logging.Formatter):
+    """
+    Colored logging formatter.
+
+    Opinionated.
+
+    Taken from https://stackoverflow.com/questions/384076/how-can-i-color-python-logging-output
+    """
+
+    def _get_base_format(color):
+        return f"[%(asctime)s] {color('%(levelname)s')}{chalk.grey(': ')}{color('%(name)s')}{chalk.grey(': ')}%(message)s"
+
+    FORMATS = {
+        logging.DEBUG: _get_base_format(chalk.cyan),
+        logging.INFO: _get_base_format(chalk.green),
+        logging.WARNING: _get_base_format(chalk.yellow),
+        logging.ERROR: _get_base_format(chalk.red),
+        logging.CRITICAL: _get_base_format(chalk.bold.red)
+    }
+
+    del _get_base_format
+
+    def format(self, record: logging.LogRecord) -> str:
+        log_fmt = self.FORMATS.get(record.levelno)
+        formatter = logging.Formatter(log_fmt)
+        return formatter.format(record)
+
+    @classmethod
+    def apply_handler(cls, logger: logging.Logger, level = logging.INFO):
+        """
+        Apply the colored formatter to a logger.
+
+        Use this with logging.root, instead of logging.basicConfig().
+        
+        Should not be called more than once.
+        """
+        logger.setLevel(level)
+        ch = logging.StreamHandler()
+        ch.setLevel(level)
+        ch.setFormatter(cls())
+        logger.addHandler(ch)
+
+
+__all__ = ('chalk', 'WebColor', "RGBColor", 'LinearRGBColor', 'XYZColor',
+     'OKLabColor', 'OKLCHColor', 'ColorFormatter')
diff --git a/src/suou/dei.py b/src/suou/dei.py
index 8d0f326..a49a398 100644
--- a/src/suou/dei.py
+++ b/src/suou/dei.py
@@ -21,6 +21,8 @@ from __future__ import annotations
 from functools import wraps
 from typing import Callable, Collection, TypeVar, Any
 
+from . import deprecated
+
 _T = TypeVar('_T')
 _U = TypeVar('_U')
 
@@ -115,6 +117,7 @@ class Pronoun(int):
 
 
 
+@deprecated('breaks the typing system somewhat; won\'t be removed tho')
 def dei_args(**renames: dict[str, str]):
     """
     Allow for aliases in the keyword argument names, in form alias='real_name'.
diff --git a/src/suou/functools.py b/src/suou/functools.py
index e72b689..d7d1166 100644
--- a/src/suou/functools.py
+++ b/src/suou/functools.py
@@ -339,6 +339,75 @@ def none_pass(func: Callable[_T, _U], *args, **kwargs) -> Callable[_T, _U]:
         return func(x, *args, **kwargs)
     return wrapper
 
+def cooldown(unit: int, /, exception: Exception | None = None):
+    '''
+    Implement a calling cooldown for a function of procedure.
+    If the decorated function is called during the cooldown,
+    the last result is returned (or occasionally an exception).
+
+    If an exception is passed explicitly as a decorator, it is
+    raised upon calling during cooldown.
+
+    Otherwise, the last result is returned (or the last
+    exception is raised.)
+
+    *New in 0.13.0*
+    '''
+    def decorator(func: Callable[..., _U]):
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            now = time.time()
+            if wrapper.timeout_until is not None and wrapper.timeout_until > now:
+                if exception is not None:
+                    raise exception
+                elif wrapper.last_exc is not None:
+                    raise wrapper.last_exc
+                else:
+                    return wrapper.last_result
+            else:
+                wrapper.timeout_until = now + unit
+                try:
+                    wrapper.last_result = func(*args, **kwargs)
+                except Exception as e:
+                    wrapper.last_exc = e
+                    raise
+                else:
+                    wrapper.last_exc = None
+                    return wrapper.last_result
+        
+        wrapper.last_result: _U | None = None
+        wrapper.last_exc: Exception | None = None
+        wrapper.timeout_until: float | None = None
+
+        return wrapper
+    return decorator
+
+def do_not_flood(unit = .25):
+    """
+    Implement a calling cooldown for a function or procedure.
+
+    If the decorated function is called during the cooldown, the function
+    blocks before being called again.
+
+    This is blocking and uses time.sleep().
+    """
+    def decorator(func):
+        @wraps(func)
+        def wrapper(*args, **kwargs):
+            now = time.time()
+            if wrapper.timeout_until is not None and wrapper.timeout_until > now:
+                wrapper.timeout_delay += unit
+                time.sleep(wrapper.timeout_until - now)
+                wrapper.timeout_until = now + wrapper.timeout_delay
+            else:
+                wrapper.timeout_delay = unit
+                wrapper.timeout_until = time.time() + unit
+            return func(*args, **kwargs)
+        wrapper.timeout_until = None
+        wrapper.timeout_delay = unit
+        return wrapper
+    return decorator
+
 __all__ = (
-    'deprecated', 'not_implemented', 'timed_cache', 'none_pass', 'alru_cache'
+    'deprecated', 'not_implemented', 'timed_cache', 'none_pass', 'alru_cache', 'cooldown', 'do_not_flood'
 )
diff --git a/src/suou/itertools.py b/src/suou/itertools.py
index 881e30a..9ec1e68 100644
--- a/src/suou/itertools.py
+++ b/src/suou/itertools.py
@@ -22,17 +22,13 @@ from suou.classtools import MISSING
 
 _T = TypeVar('_T')
 
-def makelist(l: Any, wrap: bool = True) -> list | Callable[Any, list]:
-    '''
-    Make a list out of an iterable or a single value.
+def _makelist_callable(l: Callable) -> Callable[..., list]:
+    @wraps(l)
+    def wrapper(*a, **k): 
+        return _makelist_nowrap(l(*a, **k))
+    return wrapper
 
-    *Changed in 0.4.0* Now supports a callable: can be used to decorate generators and turn them into lists.
-    Pass wrap=False to return instead the unwrapped function in a list.
-
-    *Changed in 0.11.0*: ``wrap`` argument is now no more keyword only.
-    '''
-    if callable(l) and wrap:
-        return wraps(l)(lambda *a, **k: makelist(l(*a, **k), wrap=False))
+def _makelist_nowrap(l: Any) -> list:
     if isinstance(l, (str, bytes, bytearray)):
         return [l]
     elif isinstance(l, Iterable):
@@ -42,7 +38,21 @@ def makelist(l: Any, wrap: bool = True) -> list | Callable[Any, list]:
     else:
         return [l]
 
-def ltuple(seq: Iterable[_T], size: int, /, pad = None) -> tuple:
+def makelist(l: Any, wrap: bool = True) -> list | Callable[..., list]:
+    '''
+    Make a list out of an iterable or a single value.
+
+    *Changed in 0.4.0* Now supports a callable: can be used to decorate generators and turn them into lists.
+    Pass wrap=False to return instead the unwrapped function in a list.
+
+    *Changed in 0.11.0*: ``wrap`` argument is now no more keyword only.
+    '''
+    if callable(l) and wrap:
+        return _makelist_callable(l)
+    else:
+        return _makelist_nowrap(l)
+
+def ltuple(seq: Iterable[_T], size: int, /, pad = None) -> tuple[_T, ...]:
     """
     Truncate an iterable into a fixed size tuple, if necessary padding it.
     """
@@ -51,7 +61,7 @@ def ltuple(seq: Iterable[_T], size: int, /, pad = None) -> tuple:
         seq = seq + (pad,) * (size - len(seq))
     return seq
 
-def rtuple(seq: Iterable[_T], size: int, /, pad = None) -> tuple:
+def rtuple(seq: Iterable[_T], size: int, /, pad = None) -> tuple[_T, ...]:
     """
     Same as rtuple() but the padding and truncation is made right to left.
     """
@@ -81,7 +91,7 @@ def kwargs_prefix(it: dict[str, Any], prefix: str, *, remove = True, keep_prefix
             it.pop(k)
     return ka
 
-def additem(obj: MutableMapping, /, name: str = None):
+def additem(obj: MutableMapping, /, name: str | None = None):
     """
     Syntax sugar for adding a function to a mapping, immediately.
     """
@@ -93,7 +103,7 @@ def additem(obj: MutableMapping, /, name: str = None):
         return func
     return decorator
 
-def addattr(obj: Any, /, name: str = None):
+def addattr(obj: Any, /, name: str | None = None):
     """
     Same as additem() but setting as attribute instead.
     """
diff --git a/src/suou/lex.py b/src/suou/lex.py
index 5655eea..6ad77a5 100644
--- a/src/suou/lex.py
+++ b/src/suou/lex.py
@@ -62,8 +62,6 @@ def symbol_table(*args: Iterable[tuple | TokenSym], whitespace: str | None = Non
         yield TokenSym('[' + re.escape(whitespace) + ']+', '', discard=True)
 
 
-symbol_table: Callable[..., list]
-
 def ilex(text: str, table: Iterable[TokenSym], *, whitespace = False):
     """
     Return a text as a list of tokens, given a token table (iterable of TokenSym).
diff --git a/src/suou/luck.py b/src/suou/luck.py
index c4ec49e..4c808fa 100644
--- a/src/suou/luck.py
+++ b/src/suou/luck.py
@@ -35,7 +35,7 @@ def lucky(validators: Iterable[Callable[[_U], bool]] = ()):
 
     *New in 0.7.0*
     """
-    def decorator(func: Callable[_T, _U]) -> Callable[_T, _U]:
+    def decorator(func: Callable[..., _U]) -> Callable[..., _U]:
         @wraps(func)
         def wrapper(*args, **kwargs) -> _U:
             try:
diff --git a/src/suou/markdown.py b/src/suou/markdown.py
index acd4ab5..09cac11 100644
--- a/src/suou/markdown.py
+++ b/src/suou/markdown.py
@@ -86,4 +86,5 @@ class PingExtension(markdown.extensions.Extension):
             md.inlinePatterns.register(MentionPattern(re.escape(at) + r'(' + self.CHARACTERS + ')', url_prefix), 'ping_mention', 14)
 
 
+# Optional dependency: do not import into __init__.py
 __all__ = ('PingExtension', 'SpoilerExtension', 'StrikethroughExtension')
diff --git a/src/suou/signing.py b/src/suou/signing.py
index c2011ce..55a950d 100644
--- a/src/suou/signing.py
+++ b/src/suou/signing.py
@@ -22,11 +22,8 @@ from itsdangerous import TimestampSigner
 from itsdangerous import Signer as _Signer
 from itsdangerous.encoding import int_to_bytes as _int_to_bytes
 
-from suou.dei import dei_args
-from suou.itertools import rtuple
-
-from .functools import not_implemented
-from .codecs import jsondecode, jsonencode, rb64decode, want_bytes, want_str, b64decode, b64encode
+from .itertools import rtuple
+from .codecs import jsondecode, jsonencode, want_bytes, want_str, b64decode, b64encode
 from .iding import Siq
 from .classtools import MISSING
 
@@ -35,7 +32,6 @@ class UserSigner(TimestampSigner):
     itsdangerous.TimestampSigner() instanced from a user ID, with token generation and validation capabilities.
     """
     user_id: int
-    @dei_args(primary_secret='master_secret')
     def __init__(self, master_secret: bytes, user_id: int, user_secret: bytes, **kwargs):
         super().__init__(master_secret + user_secret, salt=Siq(user_id).to_bytes(), **kwargs)
         self.user_id = user_id
diff --git a/src/suou/sqlalchemy/__init__.py b/src/suou/sqlalchemy/__init__.py
index d46ca8f..fb06720 100644
--- a/src/suou/sqlalchemy/__init__.py
+++ b/src/suou/sqlalchemy/__init__.py
@@ -154,7 +154,7 @@ def require_auth_base(cls: type[DeclarativeBase], *, src: AuthSrc, column: str |
     return decorator
 
 
-from .asyncio import SQLAlchemy, async_query
+from .asyncio import SQLAlchemy, async_query, SessionWrapper, AsyncSelectPagination
 from .orm import (
     id_column, snowflake_column, match_column, match_constraint, bool_column, declarative_base, parent_children,
     author_pair, age_pair, bound_fk, unbound_fk, want_column, a_relationship, BitSelector, secret_column, username_column
@@ -168,7 +168,7 @@ except ImportError:
 
 # Optional dependency: do not import into __init__.py
 __all__ = (
-    'IdType', 'id_column', 'snowflake_column', 'entity_base', 'declarative_base', 'token_signer',
+    'IdType', 'id_column', 'snowflake_column', 'declarative_base', 'token_signer',
     'match_column', 'match_constraint', 'bool_column', 'parent_children',
     'author_pair', 'age_pair', 'bound_fk', 'unbound_fk', 'want_column',
     'a_relationship', 'BitSelector', 'secret_column', 'username_column',
diff --git a/src/suou/sqlalchemy/asyncio.py b/src/suou/sqlalchemy/asyncio.py
index b28f305..4061c34 100644
--- a/src/suou/sqlalchemy/asyncio.py
+++ b/src/suou/sqlalchemy/asyncio.py
@@ -22,8 +22,8 @@ from functools import wraps
 
 from contextvars import ContextVar, Token
 from typing import Callable, TypeVar
-from sqlalchemy import Select, Table, func, select
-from sqlalchemy.orm import DeclarativeBase, lazyload
+from sqlalchemy import Select, Table, select
+from sqlalchemy.orm import DeclarativeBase
 from sqlalchemy.ext.asyncio import AsyncEngine, AsyncSession, create_async_engine
 
 try:
@@ -31,8 +31,7 @@ try:
 except ImportError:
     AsyncSelectPagination = None
 
-from suou.exceptions import NotFoundError
-from suou.glue import glue
+from ..exceptions import NotFoundError
 
 _T = TypeVar('_T')
 _U = TypeVar('_U')
@@ -126,9 +125,11 @@ class SQLAlchemy:
             self.engine, checkfirst=checkfirst
         )
 
-# XXX NOT public API! DO NOT USE
-current_session: ContextVar[AsyncSession] = ContextVar('current_session')
 
+current_session: ContextVar[AsyncSession] = ContextVar('current_session')
+"""
+XXX NOT public API! DO NOT USE
+"""
 
 def async_query(db: SQLAlchemy, multi: False):
     """
diff --git a/src/suou/sqlalchemy/orm.py b/src/suou/sqlalchemy/orm.py
index ada5e94..bfd6be1 100644
--- a/src/suou/sqlalchemy/orm.py
+++ b/src/suou/sqlalchemy/orm.py
@@ -18,7 +18,6 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 
 
 
-from binascii import Incomplete
 import os
 import re
 from typing import Any, Callable, TypeVar
@@ -27,10 +26,8 @@ from sqlalchemy import BigInteger, Boolean, CheckConstraint, Column, Date, Forei
 from sqlalchemy.orm import DeclarativeBase, InstrumentedAttribute, Relationship, declarative_base as _declarative_base, relationship
 from sqlalchemy.types import TypeEngine
 from sqlalchemy.ext.hybrid import Comparator
-from suou.functools import future
 from suou.classtools import Wanted, Incomplete
 from suou.codecs import StringCase
-from suou.dei import dei_args
 from suou.iding import Siq, SiqCache, SiqGen, SiqType
 from suou.itertools import kwargs_prefix
 from suou.snowflake import SnowflakeGen
@@ -131,6 +128,23 @@ def username_column(
     return match_column(length, regex, case=case, nullable=nullable, unique=True, *args, **kwargs)
 
 
+EMAIL_RE_USERNAME = r"[a-z0-9-]+(\.[a-z0-9-]+)*"
+EMAIL_RE_DOMAIN = r"([a-z0-9-]+\.)+[a-z0-9-]{2,15}"
+EMAIL_RE_YESALIASES = EMAIL_RE_USERNAME + r"(\+" + EMAIL_RE_USERNAME + ")?@" + EMAIL_RE_DOMAIN
+EMAIL_RE_NOALIASES = EMAIL_RE_USERNAME + r"@" + EMAIL_RE_DOMAIN
+
+def email_column(
+    length: int = 256, *args, allow_aliases: bool = True, nullable: bool = False, unique: bool = True, **kwargs
+):
+    """
+    Construct a column containing a email address.
+
+    *New in 0.14.0*
+    """
+    return match_column(length, EMAIL_RE_YESALIASES if allow_aliases else EMAIL_RE_NOALIASES, case = StringCase.FORCE_LOWER,
+        unique = unique, nullable = nullable, *args, **kwargs)
+
+
 def bool_column(value: bool = False, nullable: bool = False, **kwargs) -> Column[bool]:
     """
     Column for a single boolean value.
@@ -141,11 +155,12 @@ def bool_column(value: bool = False, nullable: bool = False, **kwargs) -> Column
     return Column(Boolean, server_default=def_val, nullable=nullable, **kwargs)
 
 
-@dei_args(primary_secret='master_secret')
 def declarative_base(domain_name: str, master_secret: bytes, metadata: dict | None = None, **kwargs) -> type[DeclarativeBase]:
     """
     Drop-in replacement for sqlalchemy.orm.declarative_base()
     taking in account requirements for SIQ generation (i.e. domain name).
+
+    Also supports snowflake generation parameters such as epoch.
     """
     if not isinstance(metadata, dict):
         metadata = dict()
@@ -160,7 +175,6 @@ def declarative_base(domain_name: str, master_secret: bytes, metadata: dict | No
     )
     Base = _declarative_base(metadata=MetaData(**metadata), **kwargs)
     return Base
-entity_base = warnings.deprecated('use declarative_base() instead')(declarative_base)
 
 
 
diff --git a/src/suou/validators.py b/src/suou/validators.py
index 349172a..72daf57 100644
--- a/src/suou/validators.py
+++ b/src/suou/validators.py
@@ -74,7 +74,7 @@ def yesno(x: str | int | bool | None) -> bool:
     if isinstance(x, str):
         return x.lower() not in ('', '0', 'off', 'n', 'no', 'false', 'f')
     return True
-    
+
 
 __all__ = ('matches', 'must_be', 'not_greater_than', 'not_less_than', 'yesno')
 
diff --git a/src/suou/waiter.py b/src/suou/waiter.py
index 9a5e3bd..7c55999 100644
--- a/src/suou/waiter.py
+++ b/src/suou/waiter.py
@@ -28,7 +28,7 @@ from suou.functools import future
 
 @future()
 class Waiter():
-    _cached_app: Callable | None = None
+    _cached_app: Starlette | None = None
 
     def __init__(self):
         self.routes: list[Route] = []
@@ -60,7 +60,7 @@ class Waiter():
     def patch(self, endpoint: str, *a, **k):
         return self._route('PATCH', endpoint, *a, **k)
 
-    def _route(self, methods: list[str], endpoint: str, **kwargs):
+    def _route(self, methods: str | list[str], endpoint: str, **kwargs):
         def decorator(func):
             self.routes.append(Route(endpoint, func, methods=makelist(methods, False), **kwargs))
             return func