preferences checkbox option to set animation update mode
unchecked by default, as before
play() takes a flag to inhibit resetting the playback timer
(default: timer restarts, as before)
makes this initializeFragment() logic smooth during animation:
stop(); ... if (wasPlaying) play(restart)
by passing along the preferences flag to the restart flag
simple frag with instructions on how to test the feature
verified that manual stop/start works as expected in both
animation update modes
stop(); ... if (wasPlaying) play(restart)by passing along the preferences flag to the restart flagFixes: https://github.com/3Dickulus/FragM/issues/113