init_logging can now optionally be called with an object containing
custom handlers for log messages.
This allows clients to use their own logging frameworks instead of log
messages always just being written to the console.
* Change copyright header
This updates the copyright header to say "The noVNC Authors". People
who previously had copyright listings are now under the AUTHORS file.
This commit restructures many of the ES6 modules, splitting them
up to actual export multiple functions instead of a single object.
It also splits up Util into multiple sub-modules, to make it easier
to maintain.
Finally, localisation is renamed to localization.
Jesper Alf Dam