MMA 19.08b test version

I've posted developer 19.08.b. As always, bash away and let me know if problems. Major changes from 19.08:

    The order of arguments in DEFGROOVE has been reversed. This change makes the actual code reflect the documentation.

    -xNoCredit, -xChords and -xCheckFile have been added. Fun.

    Bunch of debugging, manual fixes, etc.

    Fixed summary to show midi file duration as mm:ss.

    Changed -g message to Skipped from Existing

    The options -xCheckFile and -xChords have been modified from 19.08a. They now take their args separately. No = sign is needed/permitted.

    The code for the zOPTIONS now finds the last chord. The docs for this section (Rests, section 8.4) have been rewritten.

Get it at:

  https://mellowood.ca/mma/downloads.html#developer