Bug Fix: Fixed bugs in type analyzer relating to assignments of tuples when target uses an "unpack" operator.
Bug Fix: Fixed race condition that resulted in spurious (but temporary) diagnostics to be reported when there was an open file when VS Code started.
Bug Fix: Fixed bug in type evaluator where literals were being inappropriately stripped from type arguments in certain assignments.
Enhancement: Changed text representation of function declarations to omit extra spaces around "=" for default value assignments when type annotations are not used (consistent with PEP8 guidelines).
Enhancement: Added dataclass_fields class variable to synthesized data classes.
Enhancement: Moved type analysis to background process and added cancellation for better responsiveness.