v0.10.9

• Breaking change: Changed Messages() to take a filter as a parameter instead of using the syncer's filter (thanks to @qua3k in #55 and #56).
  • The previous filter behavior was completely broken, as it sent a whole filter instead of just a RoomEventFilter.
  • Passing nil as the filter is fine and will disable filtering (which is equivalent to what it did before with the invalid filter).
• Added Context() wrapper for the /context API (thanks to @qua3k in #54).
• Added utility for converting media files with ffmpeg.