Check for a modal window being onscreen before trying to put up the Sparkle prompt.
Updated changelog
Merge pull request #426 from alfwatt/master

Check for a modal window being onscreen before trying to put up the Spar...
Added SUUpdater delegate method for failures.
Call delegate didAbort in other drivers when showErrors is false.
Merge pull request #432 from yetamrra/master

Add delegate method for errors
Changed a straight apostrophe into a curly one

Changed the apostrophe in the title of the ‘Don’t Check’ button on the update permissions prompt dialog from a straight one to a curly one.
Merge pull request #434 from codyrobbins/master

Changed a straight apostrophe into a curly one
Make the error definitions public
Merge pull request #437 from MaddTheSane/exportErrors

Make the error definitions public
Fixing Swedish translations

See https://github.com/sparkle-project/Sparkle/issues/436
Merge pull request #439 from erik999/master

Fixed Swedish translations
Addes skip install so that Xcode creates application archive againg
Merge branch 'master' of https://github.com/sparkle-project/Sparkle