fix: fork should deep clone objects
feat: expose hooks for enqueuing and dequing tasks
feat: improve countingZone and example
fix: dont automagically dequeue on setInterval
docs: enqueueTask and dequeueTask
chore: refactor eventNames
feat: add stackFramesFilter to longStackTraceZone
test: fix longStackTraceZone test name
fix: support MutationObserver.disconnect
feat: support document.registerElement

Closes #18