v1.2.2

Bug fixes

• Fixed inconsistent targ values between single type argument forms such as ReifiedClass[int] and ReifiedClass[int,].
• Stabilized cached targ and type_args metadata. Later subscriptions with equivalent type arguments no longer overwrite the initially cached values.
• Fixed unparameterized generic subclasses incorrectly inheriting type arguments from a specialized base class.
• Added explicit validation and a clear TypeError for unhashable type arguments.

Documentation

• Documented the hashability requirement for type arguments, including Annotated metadata.
• Clarified the behavior of unparameterized generic subclasses.
• Documented the current limitation that type arguments are not propagated through generic inheritance.