Zephir 0.12.11 Released

Bug fixes related to stubs and API docs generation as well as working with data types.

Fixed

• Fixed arithmetical operations with zvals which stores double numbers
• Fixed updating static variables in the loop which represents double and integer data types #1494
• Fixed casting char into another of a different type #1988
• Fixed internal methods definition when internal-call-transformation is enabled #1956
• Fixed aliases using in the use statement when generating stubs #1986
• Fixed incorrect namespace on type hinted return when generating API docs #1229