0.14

• Add an extension system (documentation to follow later)
• Add two extensions: side pane and bookmarks
• Adher to the home directory part of freedesktop.org's
  XDG Base Directory Specification
• Handle reading and writing files with a UTF-8 BOM (#556956)
• Save SSA and ASS files with \N linebreaks instead of \n
• Resize columns after running text corrections
• Make removing a large amount of subtitles significantly faster
• Fix GtkWarning: GtkSpinButton: setting an adjustment with non-zero page size is deprecated
• Remove deprecated Encoding-field from desktop file
• Fix search dialog to not modify obsolete data (#572676)
• Fix character count error with Unicode text
• Fix updating of filenames in the projects menu
• Fix erroneous cleaning of SubRip markup after removing hearing
  impaired subtitles
• Fix open dialog file filter to list files with upper- and mixed
  case extensions as well
• Fix AssertionError when installing multiple times
• Switch version-control systems from subversion to git