vcs: fix get_changesets to .reverse() list of revision hashes in place instead of using reversed() This is slightly more performant, and will also make CollectionGenerator work with reverse=True. Before, CollectionGenerator was used on get_changesets, but never with reverse option. Trying to use reverse, it would fail when applying len(): TypeError: object of type 'listreverseiterator' has no len()

pytest >= 4.6.6, < 4.7
pytest-sugar >= 0.9.2, < 0.10
pytest-benchmark >= 3.2.2, < 3.3
pytest-localserver >= 0.5.0, < 0.6
mock >= 3.0.0, < 3.1
Sphinx >= 1.8.0, < 1.9
WebTest >= 2.0.3, < 2.1
isort == 4.3.21