busy / unbusy events for wireClient to indicate PUT and DELETE requests in progress
only spin cube on PUT and DELETE requests, refs #212
fake pulsating cube for a second again :)
added explanatory comment to wireClient~setBusy / wireClient~releaseBusy
explain why we delay sync for a second.
Merge branch 'feature/212-only-spin-on-outgoing-changes' into release/0.7.2
let's test this shit!