0.2-rc5 -> 0.2-rc6 changelog

• Main menu
  • "Settings" icon is no longer displayed over "current book" after screen rotation (#703)
• FBreader
  • (N516) Font size dialog is bound to "zoom" button (#697)
• LocoPDF
  • Fixed crash on certain PDF files (#639)
  • Implemented .djvu viewer (#473)
• (N516) Mediaplayer
  • If mp3 file has wrong encoding in ID3v2 tags, fallback encoding will be used. (#528)
  • Previously it was necessary to press stop/play key twice to actually start playback. This bug is fixed. (#704)
  • Added help (#645)
• Puzzles
  • Fixed problem which prevented all keys from working in puzzles (#682)
  • Cursor frame in "Twiddles" adjusted for better visibility (#595)
  • Tiles rotation is clockwise in "Twiddles" (#605)
  • Adjusted help hints in puzzles (#604)
• Madeye
  • Fixed crash on certain images (#689)