prepare release 2.0.0

Author: dvvanessastoiber

package.json

@@ -2,7 +2,7 @@
   "name": "coral",
   "description": "Coral is a web-based cohort analysis tool to interactively create, refine, and analyze patient cohorts.",
   "homepage": "https://caleydo.org",
-  "version": "1.1.1-SNAPSHOT",
+  "version": "2.0.0",
   "author": {
     "name": "PatrickAdelberger",
     "email": "coral@caleydo.org",