0.9.1

The first maintenance release in the 0.9.x line is here, with a few bugs and regressions fixed and minor features added, notably:

• Connection::isOnline() (@nvrWhere, #819)
• Room::pendingEventAdded() signal doesn't carry a dangling event ref any more (@nvrWhere, #823)
• MediaThumbnailJob now checks for the correct spec version for auth media (@redstrate, #821)
• Unsupported RoomType values don't litter logs with warnings any more (@redstrate, #822)
• Cleanup and code modernization (@KitsuneRal, #826 and #836)
• Access tokens are actually saved to the keychain again (@TobiasFella, #827)
• The text provided by the server is used for the error message on media endpoints (@redstrate, #832)
• Connection::supportedMatrixSpecVersions() regression fix (@TobiasFella, #834)
• Downloading encrypted files to a temporary location fixed (@vkrause, #835)
• Configurable job backoff strategies; fix the regression with syncs frequently timing out just before getting a response from the homeserver (@KitsuneRal, #838)

Full Changelog: 0.9.0...0.9.1