Pyella

Fix

* fix: add return type annotation for pure method (19) ([`5d68a9e`](https://github.com/edeckers/pyella/commit/5d68a9ec05dbd3e2eb1f1e2c475667a6d97213e2))

Breaking

* feat: make types covariant (18)

BREAKING CHANGE: Types of both Either and Maybe are now covariant ([`17a90b5`](https://github.com/edeckers/pyella/commit/17a90b5203ff48bf6e7aebe4553b6918ab4fa3cc))

Chore

* chore: create poetry env in project root ([`091e3d5`](https://github.com/edeckers/pyella/commit/091e3d54b8ce2523d92586fb5bdde8c69fd9e5de))

Feature

* feat: add py.typed (17)

* feat: add py.typed marker

* fix(deps): update poetry.lock ([`cda0be8`](https://github.com/edeckers/pyella/commit/cda0be876ae0e8251320fd395f03267e04e60244))

Breaking

* fix: drop support for Python <= 3.7

BREAKING CHANGE: drop support for Python <= 3.7 ([`3bc3ef2`](https://github.com/edeckers/pyella/commit/3bc3ef2530bb297c800015ca95767108416fbea3))

Documentation

* docs: fix a few typos (16)

* docs: rename variable in Either-example

* docs: repair backtick in README.md ([`348c466`](https://github.com/edeckers/pyella/commit/348c46670bc0b2da19ad9480253ceabaa2120d37))

Fix

* fix(deps): bump python-semantic-release to 8.0.8 ([`57b4053`](https://github.com/edeckers/pyella/commit/57b40533ed68edd3ac32561b92a62a37f9cb0777))

* fix(deps): bump dependencies ([`244bbaa`](https://github.com/edeckers/pyella/commit/244bbaa5dcca0d941cdc65c973da52fc7745928c))

Documentation

* docs: include README.md in ReadTheDocs (14) ([`440bf30`](https://github.com/edeckers/pyella/commit/440bf3077cc78a8fdbb84a960d39d7da2738c20d))

* docs: expand README.md and repair some docstrings (13)

* docs: repair some links and add class docstrings

* docs: expand README.md ([`70233d5`](https://github.com/edeckers/pyella/commit/70233d5388a7683fcf2e35516180e0f892af13b0))

* docs: add ReadTheDocs configuration (11) ([`11d1283`](https://github.com/edeckers/pyella/commit/11d12833bf03881764e10df86c03c5cdbf55e107))

Feature

* feat: add PyDocs, and add chain and discard to Maybe (10)

* docs: add some doc strings to Maybe

* docs: add some doc strings to Either

* feat: add chain and discard to Maybe ([`0886935`](https://github.com/edeckers/pyella/commit/0886935b65252badc21063004b36da18b151a857))

Fix

* fix(docs): include docstrings in release (15) ([`9673aea`](https://github.com/edeckers/pyella/commit/9673aea621fbb8990a497037ce537bbae9542e13))

Feature

* feat: add to_optional and increase code coverage (9)

* test: cover 100% of code

* refactor(lint): apply some linter suggestions ([`4071c32`](https://github.com/edeckers/pyella/commit/4071c3294330f16937e4f26654fb4bbf02373b35))