1.11 is here!

The old parser is back, for now. Here is (hopefully) complete change log since dev20b:

• Added a new parser, as alternative for old one. It needs separate jar file, which will become available as soon as I have time to debug a lot.
• Added 1.11 support (quite a lot changes) which includes most of new entities etc.
• Updated from Java 6 to Java 8 (also updated ECJ)
• Added Maven repository (see README.md)
• Added expression to toggle gravity for entities
• Added gliding-related events (experimental)
• Added basic area effect cloud support
• Added husk and zombie villager support (1.11+)
• Started working on vector support...
• Fixed timings on Windows platform
• Fixed docs not being exported with UTF-8 encoding on my Windows laptop
• Fixed an error with ip expression which occurred when player's ip address is not available

I fully expect this build to be quite stable, but as always, something unexpected might happen.

Note: To compile yourself with old parser, you need to execute oldparser.sh with bash. Do not touch anything while it compiles and make sure no program holds lock on Skript's source directory.

dev23d: Fixed debug message spam (closes #265)