• [changed] Memoize uploaders and uploader_options (Derek Parker and Joshua Davey from Hashrocket)
• [changed] Don't force pad background color to white in resize_and_pad (@fnordfish)
• [changed] Remove auth access information when parsing URL for filename (@nddeluca)
• [changed] Read Content type from cached and uploaded file, adds mime-types as hard dependency
• [added] Added authenticated_url functionality for Openstack storage (@snoopie)
• [added] Add Polish I18n translations for errors (@ArturT)
• [added] Add Greek locale for error messages (@agorf)
• [added] Add French locale for error messages (@gdurelle)
• [added] Add Japanese locale for error messages (@tomodian)
• [added] Add Norwegian locale for error messages (@theodorton)
• [added] Add Portuguese locale for error messages (@pedrosmmoreira)
• [fixed] Overridden serializable_hash accepts an options hash (@bensie)
• [fixed] Fog connection object performance issues (@taavo)
• [fixed] Delete Tempfile after manipulate with MiniMagick (@dimko)
• [fixed] Ensure #remove_#{column} and #remove_#{column} return false after committing with ActiveRecord (@bensie)
• [fixed] Fix issue with content-disposition existing with no filename when downloading, reports that Google does this (@hasghari / @bensie / @taavo)