stalebot configured to be less annoying, using dedicated label

.github/stale.yml

@@ -1,17 +1,18 @@
 # Number of days of inactivity before an issue becomes stale
-daysUntilStale: 60
+daysUntilStale: 90
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
+daysUntilClose: 30
 # Issues with these labels will never be considered stale
 exemptLabels:
   - pinned
   - security
+  - bug
+  - priority-high
+exemptProjects: true
+exemptMilestones: true
 # Label to use when marking an issue as stale
-staleLabel: wontfix
+staleLabel: no-activity
 # 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.
+markComment: false
 # Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: false