Typedal

Fix

* Paginate with limit=0 will yield all rows instead of crashing pt2 ([`78f1ae7`](https://github.com/trialandsuccess/TypeDAL/commit/78f1ae7257af0ba90040a7356ad579d3c77aa231))

Fix

* Paginate with limit=0 will yield all rows instead of crashing ([`76813e6`](https://github.com/trialandsuccess/TypeDAL/commit/76813e63fc2a0915de2ae5aa3df5be0254678f8b))

Fix

* Improvements in relationship detection and multiple mixins
* make Mixin base class define __settings__ so other mixins can use them without checking for existance

Fix

* Make 'requires=' also accept list[Validator] or a single Validator/Callable ([`a4a7c00`](https://github.com/trialandsuccess/TypeDAL/commit/a4a7c002186f8824971987f96d573fe455dcd01d))

Feature

* Add `_sql()` function to TypedTable to generate SQL Schema code. (only if 'migration' extra/pydal2sql is installed) ([`31f86de`](https://github.com/trialandsuccess/TypeDAL/commit/31f86de30cc53cf320f6231c27dd545103b50d10))
* Add FieldSettings typed dict for better hinting for options when creating a TypedField() or any of the fields using it ([`97a7c7a`](https://github.com/trialandsuccess/TypeDAL/commit/97a7c7ad6112a6098088c44bbc6ae438bbfc0040))
* Add custom TypedFields for timestamp, point and uuid (valid types in postgres and sqlite is okay with anything) ([`a7bc9d1`](https://github.com/trialandsuccess/TypeDAL/commit/a7bc9d1b7ab0c88d4937956a68305b4d61a0851f))
* Started on custom types (timestamp) ([`981da83`](https://github.com/trialandsuccess/TypeDAL/commit/981da83cc8f4fec442b2cf74e0b555ce0633f96a))

Fix

* Prepare for python 3.13 (-> cgi dependency, changes in forward reference evaluation); except psycopg2 ([`bbcca8f`](https://github.com/trialandsuccess/TypeDAL/commit/bbcca8f7a5d2f8a6ddc8caf3a1b05fde3ed2fdd2))
* Require legacy-cgi for python 3.13+ ([`7ba9489`](https://github.com/trialandsuccess/TypeDAL/commit/7ba94898cde600008a350e718783a4d0dbc05e45))

Documentation

* **readme:** Include `from typedal.helpers import get_db` in example ([`8853052`](https://github.com/trialandsuccess/TypeDAL/commit/8853052575b4576945901eb87da94bf709e99526))