* 1.14 added adjacent_interval_content().
 * 1.12 mandatory POD tests, refaddr on nexti and cohorts in unlikely event some
   object-but-array thingy is used. Makefile.PL maukeification.
 * 1.10 added mininterval().
 * gen_melody, check_melody created in 1.03, might see future
   changes in API.

Otherwise, see the git repository.