chore: Prepare for v1.12.0 (#6812)

Author: iamareebjamal

CHANGELOG.md

@@ -1,5 +1,11 @@
 ## Changelog
 
+#### v1.12.0 (2020-02-02):
+
+- Add check if donation ticket has payment method enabled
+- Fix general event statistics type
+- Internal refactoring and code cleanup
+
 #### v1.11.2 (2020-01-25):
 
 - Fix celery task status endpoint

app/api/server_version.py

@@ -1,6 +1,6 @@
 from flask import Blueprint, jsonify
 
-SERVER_VERSION = '1.11.2'
+SERVER_VERSION = '1.12.0'
 
 info_route = Blueprint('info', __name__)
 _build = {'version': SERVER_VERSION}