* Overhaul channel typing system
* Fix ESLint error
* Add channel.isTyping()
* Add count argument to startTyping
* Add range checking to startTyping count
* Better range checking for count
* Add channel.getTypingCount()
* Change getTypingCount() to typingCount getter
* Switch isTyping() to typing getter
* Fix new methods and switch to Map
* Fix applyProp so getters/setters will work
* Add default value to force