Prep for next version

* Update version
* Add bot to close stale issues

.github/stale.yml

@@ -0,0 +1,16 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 60
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 7
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - ready
+# Label to use when marking an issue as stale
+staleLabel: wontfix
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false

build.gradle

@@ -15,7 +15,7 @@ plugins {
     id 'com.jfrog.artifactory' version '4.4.0'
 }
 
-version "3.2.0"
+version "3.3.0-SNAPSHOT"
 group "org.grails.plugins"
 
 apply plugin: 'eclipse'