Renaming the variable name of typing.NewType should also rename the string type name of the NewType declaration

[lieryan]

Is your feature request related to a problem? Please describe.

When using type annotation to declare a typing.NewType, you have to pass in the type name as the first argument:

MyType = typing.NewType("MyType", int)

When you rename MyType -> NewMyType, currently rope leaves an invalid NewType declaration:

NewMyType = typing.NewType("MyType", int)

Describe the solution you'd like

rope should rename the string type name as well:

NewMyType = typing.NewType("NewMyType", int)