Add api for one-time determining an element's viewport state
elementSatisfiesRatio()
queryElement()
- Remove default
time
value forWatcher
constructor option.impressed
andimpression-complete
will no longer fire withouttime
option. - Remove default
ratio
value forWatcher
constructor option.visible
will no longer fire withoutratio
option.
Add public utility API
scheduleRead()
scheduleWork()
on()
setGlobalEngine()
Initial open source release