ankidroid/Anki-Android — pull request #28 by flerda (2013-04-14 08:36:07+00:00)
Title: A few improvements around the DeckTask.

- Made fields final and added a constructor.
- Remove static sOldInstance and instead store a mPreviousInstance in
the task itself. This also guaratees the correct sequencing of tasks.
- Rename static sInstance to sLatestInstance to reflect the semantics.