chore: Prepare for v1.13.1 (#6859)

Author: kushthedude

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## Changelog
 
+#### v1.13.1 (2020-02-20):
+
+- Fix keyerror due to my_tickets_url resulting in failure of order patch.
+
 #### v1.13.0 (2020-02-20):
 
 - Fix cron job timings preventing multiple emails to attendees

app/api/server_version.py

@@ -1,6 +1,6 @@
 from flask import Blueprint, jsonify
 
-SERVER_VERSION = '1.13.0'
+SERVER_VERSION = '1.13.1'
 
 info_route = Blueprint('info', __name__)
 _build = {'version': SERVER_VERSION}