Bump version to 2.0.0.

Author: chimbori

library/build.gradle

@@ -1,8 +1,8 @@
 apply plugin: 'com.android.library'
 
-def versionMajor = 1
-def versionMinor = 6
-def versionPatch = 2
+def versionMajor = 2
+def versionMinor = 0
+def versionPatch = 0
 def versionBuild = 0 // bump for dogfood builds, public betas, etc.
 
 android {