Debug / error output on Entry Tags

I think this looks nicer than NPE stacktraces.
Add "player pickup <item>"

As opposed to "player pickup item" and "player pickup arrow" with no
other options.
... Why did that even...
More command meta
Fix meta
More fixes..
Fix "player pickup <item>"
Add "on projectile hits block" world event

also "on <projectile entity type> hits block"
Add more context to projectile hits block
Adjust equip commandregistry entry
Update Switch command

Should all function as before, but now reads duration correctly + mostly
matches the new 0.9 command coding standard
Fix dList meta
Change POM to reference new citizens repo url.
Remove unused import...
Update Block listener to new coding conventions.
Remove unused imports.
Remove unfinished Creator trait.
Small fix to Block listener
Add context to triggers
Add more context stuff
Fixes to BlockListener