Added concat functionality for audio files, Custom Frame/Audio Filter, minor improvements …

I forgot to release this stuff like half a year ago, anyway: Thanks to @camilo246800 for letting me know that there was missing something in #641 (comment).

Added:

• Add compatibility to the latest BinaryDriver version (#582 by @tifabien)
• Custom Frame filter functionality (#611 by @iljalukin)
• Allow special chars in filenames when concating (#587 by @rolandstarke)
• Custom Audio Filter functionality (#593 by @jonhassall)

Fixed:

• Documentation updates/fixes (@georgejipa, @jens1o)

Thanks to all contributors, even when I missed to release this good stuff. 😅