Add lots of comments to JanusMessages.cs to increase understandings.
Simplify some of the field fetching in JanusMessages.cs
Better handling of hangup and logout so sessions are destroyed when viewers disconnect
Bump version number
Watch for Hangup from Janus and de-allocate the session.
Move ViewerSession storage and code into own static class.
Refactor the use of "session" since the term was used for too many things.
Return JanusMessages.EventResp for onEvent delegate parameters.
Add an initial console command.
Remove some of the chatty debug messages.