Migrate to hatchling (#1095)

* Migrate to hatchling instead of poetry, ruff instead of flake8

* Migrate to hatchling instead of poetry, ruff instead of flake8

* Update tests suite

* venv?

* -m venv?

* Change dependencies

* Remove venv

* Change mypy config

* Added changelog

* Mark uvloop incompatible with pypy

* Update release script

* Use internal caching for dependencies

* Re-disable cov branches

* Added contributing guide

.readthedocs.yml

@@ -1,11 +1,13 @@
 version: 2
 
 python:
-  version: "3.8"
+  version: "3.10"
   install:
     - method: pip
       path: .
-    - requirements: requirements/docs.txt
+      extra_requirements:
+        - docs
+        - redis
 
 sphinx:
   configuration: docs/conf.py