MAINT: Remove unused arguments
ENH: Add resetAnimation callback function

resetAnimation takes care of removing the traces from the screen at any
given point during or after the animation. This is useful because you
may want to try out a few different things and the traces might be in
your way.
DOC: Add note to ChangeLog.md about resetAnimation
Merge pull request #288 from ElDeveloper/cleanup

ENH: Add missing resetAnimation functionality