3.4.0

Bug fixes:

• Fixed ImportHooks: it must raise ModuleNotFoundError
  instead of ImportError.

• Fixed absolute import in ImportHooks under Python 3.

• Use cache_from_source in ImportManager to find out
  .pyc/.pyo byte-code files.

• Fixed unmarshalling .pyc/.pyo byte-code files
  in ImportManager.

• Fixed Template.webInput: Use urllib.parse.parse_qs
  instead of cgi.FieldStorage; Python 3.13 dropped cgi.

• Fixed _namemapper.c: Silent an inadvertent TypeError exception
  in PyMapping_HasKeyString under Python 3.13+
  caused by _namemapper looking up a key in a non-dictionary.

• Fixed _namemapper.c: Silence IndexError when testing
  name[attr]. Some objects like re.MatchObject implement both
  attribute access and index access. This confuses NameMapper because
  it expects name[attr] to raise TypeError for objects that don't
  implement mapping protocol.

• Fixed mapping test in NameMapper.py:
  Python 3.13 brough a new mapping type FrameLocalsProxy.

• Fixed another RecursionError in ImportHooks under PyPy3.

Tests:

• tox: Run tests under Python 3.13.

CI:

• CI(GHActions): Switch to setup-miniconda.

• CI(GHActions): Run tests under Python 3.13.

Build/release:

• Rename sdist to lowercase; different build tools produce different case.
  This is important because stupid PyPI doesn't ignore sdists
  in different cases but also doesn't allow uploading.
  So we use single case, all lower. Also see PEP 625.