Gap length and bugfixes

New commandline option:

• --gap_length=x to set the amount of silence generated at the end of non-looping tracks

Also fixed some bugs so the generated WAV files are exactly what they should be; previously they were always the next multiple of 512 samples, padded with silence.

Rendering options

New commandline options:

• --play_length=x to set the playback time (excluding fade out on looping)
• --fade_length=x to set the fade out time (on looping)
• --loop_count=x to set the loop count

Also more data is now shown when using --json.

Sampling rate option

New commandline option --sampling_rate=x to produce WAVs at rates other than 44100Hz. Also --no_progress to disable the "progress" display, making it faster if you don't need that. Also fixed some bugs with UTF-8 handling of tags.

2019-01-25

Build of latest commit, after some conversion to latest VS2019 and Windows API