PyCAPI 0.78

This is PyCAPI's eightieth release. It adds support for the following APIs:

PyBUF_ANY_CONTIGUOUS PyBUF_CONTIG PyBUF_CONTIG_RO PyBUF_C_CONTIGUOUS PyBUF_FULL PyBUF_FULL_RO PyBUF_F_CONTIGUOUS PyBUF_INDIRECT PyBUF_ND PyBUF_RECORDS PyBUF_RECORDS_RO PyBUF_SIMPLE PyBUF_STRIDED PyBUF_STRIDED_RO PyBUF_STRIDES