Bump to version 2.1.1

Lobster · Lobster · commit 249c8d320dfd · 2019-10-31T15:54:27.000+01:00
diff --git a/lib/redmine_zulip.rb b/lib/redmine_zulip.rb
@@ -1,5 +1,5 @@
 module RedmineZulip
-  VERSION = "2.1-alpha1"
+  VERSION = "2.1.1"
 end
 
 Rails.configuration.to_prepare do
