v1.0.39: Add files via upload

[tomejanzen]

2023-02-20 Thomas E. Janzen janzentome@gmail.com
* MidiEvents.h: mark consume_stream() private since it's
called only by constructors.
* miditext.texi: explain testing, and differences in round-trip
recreated MIDI files.
* Composer.{h,cc}: add a random generator that ranges::shuffles will use.
* Composer.cc: Use ranges for track shuffling etc.
Also remove defect of leaders_topo_sort.resize(). (maybe false alarm)
* Composer.h: track scrambling option was spelled wrong with a capital:
nextPermutation but s/b nextpermutation and previouspermutation.
* smustextmidi.cc: use C++ back_inserter in the transform() of NoteEvents.

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This discussion was created from the release v1.0.39: Add files via upload.