New Feature: Added new configuration switches reportOptionalSubscript, reportOptionalMemberAccess and reportOptionalCall to control whether the type checker should report errors for these conditions.
New Feature: Added type analysis for lambdas.
New Feature: Added more comprehensive error reporting for type mismatch errors. These multi-line errors now include hierarchical information and detail about the detected type mismatch, allowing for easier diagnosis.
New Feature: The type checker now reports cases where a non-quoted type forward reference is used within a regular ".py" file. Such forward references are allowed in stub files.
Fixed several bugs in type matching logic related to function (Callable) types.
Fixed bug in handling of special-case types like Dict and FrozenSet when they are used in type annotations with no type arguments.
Added missing support for matrix multiply operator (@).