Added level cap feature

Now server admins can have a level cap feature which disables exp receiving from monsters when player reaches a certain level!

Fixed PK announcement

Converted PK announcement to in-game shout

Resolves #1

Added player kill announcement support

v1.1

Added player kill announcement

Made accessing map ID simpler

PK is disabled in Quanato for demonstration purpose!

Initial release

In this release, PK has been disabled in Quanato map as an example!