Updated schema changes for 8.3

Author: mattrobenolt

CHANGES

@@ -13,6 +13,12 @@ Version 8.3.0
 Schema Changes
 ~~~~~~~~~~~~~~
 
+- Added ``ProjectDSymFile`` model.
+- Added ``Counter`` model.
+- Added ``GlobalDSymFile`` model.
+- Added ``Group.short_id`` column.
+- Added ``sentry_increment_project_counter`` function for PostgreSQL.
+- Added ``Project.forced_color`` column.
 - Added ``GroupRedirect`` model.
 
 Version 8.2.4