20.2.0
Prepare 20.2.0
Add attr.field (#669)
pre-commit autoupdate
Move package into src directory
Move resolve_types to _funcs and tweak docs
Don't reset custom __setattr__ in slotted classes (#681)
NG: make frozen classes comfortably subclassable (#687)
Rename _version.py into _version_info.py
Rename converters.chain to converters.pipe
Add on_setattr hooks to attr.s and attr.ib (#660)
Add default_role for Sphinx. (#571)
Fixes generics in mypy types (#443)
Add PEP484 stubs (#238)
fix comment typo
Fix some typing issues (#581)