0.7.0 (to be announced) "seismic orbit"
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+- The new "duration" keyword of the mood grammar makes it possible to
+ impose a constraint on the duration of the admissible files.
- Paraslash writers handle early end-of-file more gracefully.
- The alsa writer no longer warns about spurious underruns.
+- The score formula of the audio file selector has been reworked.
+- Cleanups of the doubly linked lists code.
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0.6.4 (2021-11-04) "fuzzy calibration"