LibCST 0.3.3 Release - 2020-03-05

Added

• ByteSpanPositionProvider provides start offset and length of CSTNode as metadata.
• get_docstring helper provides docstring from Module, ClassDef and FunctionDef node types.

Updated

• Optimized ScopeProvider performance to run faster and use less memory:
  • remove unnecessary Assignment of keyword Arg.
  • don't provide scope object for formatting information nodes.
  • batch set union updates in infer_accesses step.

Fixed

• Fixed _assignments mutation when calling read-only Scope.get_qualified_names_for and __contains__.