New feature: Only keep hidden track one audio as a separate track if it is longer than a second:
- I have tested perfect-flac-encode with over 200 disc images. When tagging the resulting FLAC files, I noticed that VERY MANY discs (over 50) contain HTOA. It is usually shorter than a second. Therefore, it is more likely to be a mastering error than an actual hidden track. Typically, those sub-second tracks do not appear as a separate track in MusicBrainz and would make tagging very difficult. So we need this workaround to merge them with track 1.