Version 2.0.0

The release is breaking because it change some function names (that are now legacy), but otherwise it's just new functions.

Changes from 1.2.0

• Many many many network functions by @zorfmorf in #27
• Add UGC.subscribeItem and UGC.unsubscribeItem by @oatmealine in #24

Full Changelog: v1.2.0...v2.0.0