0.13.0 aka The Lintoberfest

This is a huge release that was created during the Hactoberfest season.
It would have been impossible without the huge help from our awesome contributors. Thanks a lot to everyone!

This release is not focused on any particular area.
It features a lot of new rules from different categories.

Features

• Adds cognitive complexity metric, introduced by cognitive_complexity
• Adds docstrings linter darglint
• Updates pep8-naming and flake8-comprehensions
• WPS431 now allow customize whitelist via nested-classes-whitelist setting
• Forbids to have invalid strings in stared expressions like **{'@': 1}
• Forbids to use implicit primitive values in a form of lambda: 0
• Forbids to use approximate math constants
• Forbids to redefine string constants
• Forbids use of vague import names (e.g. from json import loads)
• Makes OveruseOfNoqaCommentViolation configurable via --max-noqa-comments
• Forbid incorrectly swapped variables
• Forbids to use redundant subscripts (e.g., [0:7] or [3:None])
• Allows super() as a valid overused expression
• Forbids to use super() with other methods and properties
• WPS350 enforces using augmented assign pattern
• Forbids unnecessary literals
• WPS525 forbids comparisons where in is compared with single item container
• Forbids wrong annotations in assignment
• Forbids using multiline for and while statements
• WPS113 now can be tweaked with I_CONTROL_CODE setting
• Adds WPS000 that indicates internal errors
• Forbids to use implicit yield from
• Forbids to start lines with .
• Enforces better &, |, >>, <<, ^ operators usage
• Forbids incorrect exception order
• Enforces tuples usage with frozenset constructor
• Changes how WPS444 works, now we use stricter logic for while and assert
• Forbids to use yield from with incorrect types
• Forbids to use consecutive yield expressions
• Enforces to use .items() in loops
• Enforces using .get() over key in dict checks
• Forbids to use and declare float keys in arrays and dictionaries
• Forbids to use a[len(a) - 1] because it is just a[-1]
• Forbids too long call chains like foo(a)(b)(c)(d)

Bugfixes

• Fixes ImplicitElifViolation false positives on a specific edge cases
• Fixes --i-control-code setting for BadMagicModuleFunctionViolation
• Fixes compatibility with flake8 3.8.x
• Fixes that not not True was not detected as WPS330
• Fixes addition of MisrefactoredAssignmentViolation check
• Fixes WrongMagicCommentViolation not catching certain wrong comments
• Fixes BadMagicModuleFunctionViolation false positives on class-level methods
• Fixes InconsistentReturnViolation false positives on nested functions
• Fixes that --i-dont-control-code was not present in command line options
• Fixes BlockVariableVisitor false positives on a properties
• Fixes that // was not recognised as a math operation
• Fixes false positive BlockAndLocalOverlapViolation on annotations without value assign
• Fixes bug when x and not x was not detected as the similar conditions by WPS408
• Fixed that 1.0 and 0.1 were treated as magic numbers

Misc

• Improves Github Action stability
• Replace scripts/tokens.py and scripts/parse.py with external tools
• Improves violation code testing
• Improves testing of .. versionchanged and previous_codes properties
• Reference isort settings requirement for compliance with WSP318 in docstring
• Improves tests: we now ensure that each violation with previous codes also
  has corresponding versions changed in their documentation