v0.9.51

• Fixed adding local torrent files causing crash
• Added saving .torrent files and resuming session from them instead of using
  fastresume files only, #357
• Web UI can now add torrents without starting to stream
• Hovering over the progress bar in web UI shows the percentage
• Fixed memory leak when adding a torrent file from a URI
• Properly fixed wrong resolution in choose stream dialog, #261 🔥
• Check available space when resuming torrents or adding from web UI