v2.0-alpha

Release Candidate for version 2.0

• Accept delay in demuxing and muxing for tsmuxer.
• Two options in demuxing (eac3to and tsmuxer) and two in transcoding (eac3to and ffmpeg).
• Fix unescape special chars in glob.
• New Function:
  • flac2aac
  • merge_mpls
  • cut_mkv