Pyidm

- Show Total download speed.
- [auto refresh url] fix refreshed object gets different uid

- Auto refresh expired url, issue 187.
- prevent using ffmpeg.exe under linux if it exists in pyidm folder.
- write 'last modified' timestamp to downloaded file, issue 204.
- Fix multiple D.Items reference to same object.
- Fix encoding error when writing metadata on windows
- some bug fixes.

- [CHECKSUM] fix out of memory when calculating checksum for big files.
- Add option to set a custom "http user agent" issue 199

- [playlist] Fixed youtube-dl playlist processing
- [playlist window] added "select all" checkbutton issue 187
- [Settings tab] enable / disable autoscroll downloads tab to bottom when adding new item issue 187
- [downloads tab] Added "RESUME", and "STOP" buttons, issue 187
- [downloads tab] Select multiple items in downloads tab.
- CAPTCHA workaround, enable option in setting [experimental], issue 105
- [Main Tab] fix for file rename issue 19
- [video extractors] quick switching between youtube-dl and youtube-dlc.
- [video playlist] removed duplicate call of select_playlist_video()
- Removed symbols from Stream menu, issue 197.
- [stream menu] use correct quality value issue 198
- [Update] one update button to check and update PyIDM, youtube-dl, and youtube-dlc.
- [Main Tab] Fixed Playlist and stream menu select color

- Set youtube-dl as the default video extractor, still can select youtube-dlc as an alternative extractor.
- fixed youtube-dl update, used pypi .whl file as an update source
- [playlist window] added master quality (stream) selection
- fixed youtube-dlc not imported correctly during app startup
- [critical] convert slashes to backslashes to fix ffmpeg error on windows issue 185
- [GUI] moved video extractor menu under update section
- Fixed manual dash audio, when selecting first stream.

- Added youtube_dlc support.
- Double click and open the player, issue 174
- fixed pending items disappear if changed theme or restart application.
- replaced font symbols by image icons.
- fixed playlist download folder
- Added option to bypass server's SSL certificate check, issue 177