* Clear up some stuff, fix location of wire packet encoder
* Ensure that the player injection cache is always up-to-date
* Make uninjection from a channel more reliable
* Don't schedule an empty runnable if there is no need to do that
* Remove unnecessary throw declarations from some methods
* Adjust uninjection to remove the injector reference as well
* improve channel future injection in network manager
Note that things may not initially work as expected. There are known issues (see #880) relating to dimensions, chat packets, and tile entities. There were also internal changes to attributes, though hopefully those are fixed. As always, report issues on GitHub.
