Just Enough Dimensions

• Fix detecting generator changes when applying WorldInfo values in the overworld
• Add the ability to use custom sky renderers. Closes GH #18.
• Fix a crash when trying to set the SkyRenderer without data
• Re-use existing DimensionType entries as much as possible
• Add more logging (unloaded chunks count) to the /jed unload-empty-dimensions command
• Add a config option for the client color events + some related clean-up

Original build time: 2018-01-30 23:53:26 UTC+2