Enhancement: Added support for accessing metaclass members from class. This allows, for example, access to the __members__ attribute of an Enum class.
Enhancement: Added type completion support for class attributes provided by a metaclass.
Bug Fix: Fixed bug that caused unbound variables to go unreported if they had type annotations.
Bug Fix: Fixed bug in type narrowing logic for isinstance call. It wasn't properly handling bound TypeVar types. This includes synthesized bound TypeVars like those used for unannotated "self" and "cls" parameters.
Bug Fix: Fixed bug that caused stand-alone expression statements (those that are not included in other statements) to go unchecked, resulting in symbols potentially unreferenced and type errors unreported.
Bug Fix: Fixed bug where the use of unpack operator within a tuple not surrounded by parens within a return/yield statement incorrectly reported an error when used with Python <3.8.
Bug Fix: Changed signature help provider to use the __init__ method signature (if available) for class construction expressions. It previously used the __new__ method signature by default.
Enhancement: Unaccessed function parameters are now displayed as "grayed out" in VS Code. There was previously code in place to do this, but it contained a bug that went unnoticed.