Move the Html5 implementation into the base classe and make the implementation package-access
Make the class public to use from other packages
Create some listener-oriented implementation of notification patterns
Bump the version in preparation for next release
Exclude field in comparison testing
Move EventSource to using EventSourceListener interface as the primary means of notifying library
consumers of EventSource events. Add an EventBasedEventSourceListener to support the previous
event-oriented mechanisms of integrating with the EventSource library.