remove deprecieated import in Coverage.py

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.

Rewrite tp_dealloc() of fused types functions to correctly disable GC before starting to clean up references.

Fix Py3 list comprehensions in (C-)class bodies: loop variable was declared in the object struct instead of the scope that declared the class (usually the module init function).