Log Message:
py-anki2: update to 2.0.50.

Changes in 2.0.50

Released 2018-03-08.

Fixed a bug on macOS High Sierra that could cause media files to
be detected as changed when they hadn’t been.

Burying now defaults to off.

The default review limit is now 200 cards/day.

Changes in 2.0.49

Released 2018-02-05.

The standard Mac build is now 64 bit, which should prevent warnings
in future macOS updates. If you’re on an older machine that is 32
bit only, you’ll need to switch to the alternate build.
Changes in 2.0.48

Changes in 2.0.48

Released 2017-10-11.

Built with an updated Python version, which fixes some issues
add-ons were having accessing secure sites. Due to regressions with
the Linux build, this version is only available for Windows and
Mac.

Update 2017-11-28: The alternate Mac version also had problems with
the new Python, and has been rolled back.