• Drop Python 3.10 support (flake8 itself now requires >=3.11)
• B018: only report a map(), filter(), reversed(), zip() or
  enumerate() statement when the name is the builtin, not when the module
  defines or imports its own function under that name, which may well do the work
• B031, B911: a bare groupby/batched imported from itertools no longer
  counts as itertools when a later module-level def or assignment replaces it
• B031, B911: an annotated batched: Callable = itertools.batched counts as
  itertools, like the same assignment without the annotation
• B912, B913: only report map() and zip() when the name is the builtin, not
  when a module-level def, class, import or assignment replaces it with
  something else
• B905, B910: only report zip() and defaultdict(int) when the name is the
  builtin zip/collections.defaultdict, not when a module-level def,
  class, import or assignment replaces it with something else
• B018, B031, B905, B910, B911: an import or zip = builtins.zip style alias
  inside a function or class no longer overrides the module's own def,
  class or import of that name, since it only binds the name locally
• B042: don't report an __init__ that calls a direct base class's __init__
  explicitly and forwards its own arguments unchanged and in order, like
  Exception.__init__(self, msg, opt), also after another base's __init__
  such as a mixin's
• Add type hints throughout bugbear, checked with mypy --strict in tox and CI