Update Coverage.py 

remove deprecieated import in Coverage.py

Generalise .so file regex even further as the platform suffix of extension modules can be arbitrarily complex in Py3.5+.

append to list
use _get_actual_filename also for file_reporter() and file_tracer()

use filepath with the correct upper and lowercases

Fix classmethod creation for (upcoming) PyPy{,3} 5.9

Make some dealloc behaviour depend on "tp_finalize" slot usage and not just Python version because it depends on the time when the finalisation is executed (during or before dealloc).

This reverts commit 53327193.

Fixes Github issue #1886.

Closes #1879.

Disable PEP-489 support by default (*sigh*).  It actually requires more than Cython currently implements: sub-interpreter support and reloading support, i.e. per-interpreter module globals/types/state.
Closes #1894.

Make test runner shards deterministic with a non-forking multiprocessing pool (i.e. on Windows) that may use different hash seeds.