Clarified javadocks for getPoint
Merge pull request #561 from croxis/master

Clarified location of getPoint on EntityInteractEvent
Initial plugin update / install API

Signed-off-by: Walker Crouse <walkercrouse@hotmail.com>
[Breaking] Remove unecassary plugin abstraction

Signed-off-by: Walker Crouse <walkercrouse@hotmail.com>
Added Quaternion conjugation.

Signed-off-by: Wolf480pl <wolf480@interia.pl>