Fixes a few issues such as /wg stopprofile leaving a pseudo-cancelled
task in the supervisor, delaying server shutdowns until profiles finish,
not forwarding exceptions that occur during tasks running correctly, etc.
It is possible, for example when teleporting between two worlds, that
regions in two different managers are compared. If the regions in each
world have the same name, they would return equal. Removing the equals
override will prevent two different regions from seeming equal even if
they are not.
Old Bukkit code can still be found in the worldguard-legacy folder
and built with `gradle worldguard-legacy:build`. Hopefully nothing
got lost in the gradle-ization.
