22.9.0

• Add --safe and --aggressive
• Add --pyanalyze-report
• Do not add None return types to methods marked with @abstractmethod and
  to methods in stub files
• Improve type inference:
  • "string" % ... is always str
  • b"bytes" % ... is always bytes
  • An and or or operator where left and right sides are of the same type
    returns that type
  • is, is not, in, and not in always return bool