Added auto versioning.

Now versions update it self, with some commands in build.
Also added a property for the major fix in this version. That is the
name of the update.
Fixed multi world support for hp

Now hp can be enabled an disabled per world.
Also formatted some code an made some things private.
Updated references

Some previous commits make it necessary to update some code. Also
reformatted a bit.
Fixing error in code getting config values

A small spelling mistake, which crashed the plugin.
Also removed unnecesarry arguments from method declarations.
Updated references.
Reenabled PlayerChangedWorldEvent

Not needed code that was disabled now needs to be used.
Lets the hp update on world change.
Edited ingame output

Now the players hp in chat are rounded-
Reenabled code

Reenabled code that will be used in future commits.
Also updated the plugins version.