• Fix a bug in Anki 2.1.28+ where a newly created deck config would default to
  an ease of 130%. When updating, Anki will automatically change any deck
  configs with an ease of 130% back to 250%, and change any cards using those
  deck configs with a low ease back to an ease of 250%. Users who updated from
  an older Anki version and did not add new deck configurations should not be
  affected. If you have deliberately set an initial ease of 130%, please change
  it to 131% or greater prior to upgrading, so that Anki leaves your settings
  alone. Thanks to Aleksa for discovering the issue.
• Update the standard builds to the latest GUI toolkit version.
  Please report any improvements or regressions you notice.
• Dropped audio plays automatically again (thanks to abdo).
• Revert to older sound playing behaviour to work around issues
  (thanks to kelciour).
• is:due now stops at now+learn ahead limit, instead of end of day.
• Various improvements/fixes, some thanks Aleksa & Henrik.