What's New in Pylint 2.9

Release: 2.9
Date: TBA

Summary -- Release highlights

New checkers

consider-using-dict-items: Emitted when iterating over dictionary keys and then indexing the same dictionary with the key within loop body.
consider-using-maxsplit-arg: Emitted either when accessing only the first or last element of str.split().
An ignore_signatures option has been added to the similarity checker. It will permits to reduce false positives when multiple functions have the same parameters.

Other Changes

Pylint's tags are now the standard form vX.Y.Z and not pylint-X.Y.Z anymore.
Fix false-positive too-many-ancestors when inheriting from builtin classes, especially from the collections.abc module
The output messages for arguments-differ error message have been customized based on the different error cases.
New option --fail-on=<msg ids> to return non-zero exit codes regardless of fail-under value.
A new error called arguments-renamed has been created, which identifies any changes at the parameter names of overridden functions. It aims to separate the functionality of arguments-differ.
Fix incompatibility with Python 3.6.0 caused by typing.Counter and typing.NoReturn usage