Subgrounds

Fix

* Critical fix that amends `__exit__` and `__aexit__` ([49](https://github.com/0xPlaygrounds/subgrounds/issues/49)) ([`b60e3a9`](https://github.com/0xPlaygrounds/subgrounds/commit/b60e3a9fb09a78384c9783b0ba677b98b3879216))

Documentation

* Finally formatting changes to README.md ([`5820110`](https://github.com/0xPlaygrounds/subgrounds/commit/58201108f42d70d53bab9b88b2fabe6f2a2e1657))
* More formatting changes to README.md ([`71a66a8`](https://github.com/0xPlaygrounds/subgrounds/commit/71a66a81974e4632b4102fe4b5584c6d9136497b))
* Format code-block in README.md ([`0db2207`](https://github.com/0xPlaygrounds/subgrounds/commit/0db22079329f40254ce51aa0d615f730cc4099f4))

Feature

* Pydantic upgrade to v2, maintaining V1 API internally ([45](https://github.com/0xPlaygrounds/subgrounds/issues/45)) ([`25570ae`](https://github.com/0xPlaygrounds/subgrounds/commit/25570ae1f4d293f46312f195d5344473ad63e8fa))
* Pandas upgrade to v2 ([44](https://github.com/0xPlaygrounds/subgrounds/issues/44)) ([`5d1670b`](https://github.com/0xPlaygrounds/subgrounds/commit/5d1670bc1077c0f81fc2426e512118006f07f81b))

Fix

* Nested filters ([40](https://github.com/0xPlaygrounds/subgrounds/issues/40)) ([`3f3f575`](https://github.com/0xPlaygrounds/subgrounds/commit/3f3f5753bf5dba9ac39664156b76f81697055a23))

Documentation

* Update CHANGELOG.md ([`7ef0876`](https://github.com/0xPlaygrounds/subgrounds/commit/7ef08764cd27478ab9797f2823a823cbbe095ec2))

Feature

* Async support for subgrounds (+ more) ([36](https://github.com/0xPlaygrounds/subgrounds/issues/36)) ([`929a882`](https://github.com/0xPlaygrounds/subgrounds/commit/929a88221ac571b1a45b5877e62d6d4cb2d1a91e))
* Ability to create custom clients via `SubgroundsBase`

Changes
- The entirety of how subgrounds coordinates the production, transformation, and pagination of requests has been completely reworked from the ground up.
- Instead of a recursive call stack, transformation and pagination is lazily computed.
- Then, a client (implementing `SubgroundsBase`), *drives* the actual processing of requests/responses until completion.
- Subgrounds models the [sans-io](https://sans-io.readthedocs.io/) approach to handling requests
- This means subgrounds is untangled from actually making IO
- This has enabled custom clients, allowing anyone to customize subgrounds interface.
- Various rewrites, reworks, and improvements to documentation.

Fix

* `add` method of `Selection` class ([39](https://github.com/0xPlaygrounds/subgrounds/issues/39)) ([`5c18dec`](https://github.com/0xPlaygrounds/subgrounds/commit/5c18dec14fb78176238d3bda2c0e6a3016de0b4e))

Documentation

* Update README links ([`f271706`](https://github.com/0xPlaygrounds/subgrounds/commit/f271706fee42c90ab99840bac65952217a5aaf1a))

Feature
* Add helpers for accessing the playgrounds gateway ([21](https://github.com/0xPlaygrounds/subgrounds/issues/21)) ([`e44aee6`](https://github.com/0xPlaygrounds/subgrounds/commit/e44aee65649bff192321cfd82436b65da236d870))

Documentation
* Add open in colab button ([`02ff722`](https://github.com/0xPlaygrounds/subgrounds/commit/02ff7226e54920f411a9817f1eb26c757e4a2a32))
* Add gateway notebook as another example ([`98eab32`](https://github.com/0xPlaygrounds/subgrounds/commit/98eab32d4bb9fcae072dcceefae94a8692e10852))
* Adjust example notebook for colab ([`6210556`](https://github.com/0xPlaygrounds/subgrounds/commit/62105568b61c3a155ee07c6077b4b1e1d81f27fd))
* Adjust wording in example notebook ([`357c6d8`](https://github.com/0xPlaygrounds/subgrounds/commit/357c6d859aea36d680cfde7d728a24a66ae67193))
* Add example notebook + swap binder for colab ([`06cc728`](https://github.com/0xPlaygrounds/subgrounds/commit/06cc72860e2d83fc200b1198519da5963a85b0c1))
* Add CI status badge to README.md ([`4c6dca9`](https://github.com/0xPlaygrounds/subgrounds/commit/4c6dca90174cbbfd990dbf7906bf75ee50f4d65a))
* Broken link in README ([19](https://github.com/0xPlaygrounds/subgrounds/issues/19)) ([`211f965`](https://github.com/0xPlaygrounds/subgrounds/commit/211f965331225fb7287cff027c5dd01e8a4e5784))