pylint 2.9.2

on Python PyPI

Fix a crash that happened when analysing code using type(self) to access
a class attribute in the unused-private-member checker.

Closes #4638

Fix a false positive for unused-private-member when accessing a private variable
with self

Closes #4644

Fix false-positive of unnecessary-dict-index-lookup and consider-using-dict-items
for reassigned dict index lookups

Closes #4630