Fix timer#ensureAborted on IE8
Use WSS as the primary fallback if not encrypted
Fix the broken fallback spec
Install jbundle from public Github resource
Merge branch 'use_wss_as_primary_fallback' into 2.2
Extended events dispatcher with optional context
Updated docs to match extended events dispatcher
Removed obsolete documentation
Merge remote-tracking branch 'dirkbonhomme/feature/events' into 2.2

Conflicts:
	src/events_dispatcher.js
Cover more scenarios in EventsDispatcher specs
Refactor CallbackRegistry#remove
Update Flash instructions in the README
Bump version to 2.2.0-rc3
Update the changelog for version 2.2.0-rc3
Disable XHR streaming for Android 2.x

The stock browser buffers incoming data and batches it into 4KB blocks. This
causes streaming to fail. Normally, polling will take over, but we can't use
streaming in the test suite.
Update distribution files to version 2.2.0-rc3
Merge branch 'r2.2.0-rc3' into 2.2