Check this.started when returning early from handleMove.

Test Case: single click on pep'ized element. (don't drag.)
Observed behavior:  `stop` gets called. `start` does not. 
Desired behavior: `start` gets called, then `stop` gets called.

I had some weird stuff happening, because my "stop" code assumed that the "start" code ran. But in this one weird case, that's not true.