Add commented-out changeDuration() function
Add commented-out changeDuration() function

humdrum-tools/minHumdrum,humdrum-tools/minHumdrum,humdrum-tools/minHumdrum,craigsapp/minHumdrum,craigsapp/humlib,craigsapp/humlib,craigsapp/minHumdrum,craigsapp/minHumdrum,craigsapp/humlib