Add a start date option to ignore old issues and PRs (#269)

* docs(readme): add a small precision about the operations-per-run

closes #230

* chore(lint): ignore the lib folder for prettier

* chore(date): add a function to check if a date is valid

* chore(date): add a function to get a humanized date

* chore(date): add a function to check if the date is more recent than

* feat(date): add a start date to ignore old issues and PRs

closes #174

* docs(readme): change the date to match the description

* chore(date): add a better type for the date

* docs(date): add missing JSDoc about the return type

* chore(rebase): fix issues due to rebase

* docs(readme): fix table formatting issues

action.yml

@@ -4,6 +4,7 @@ author: 'GitHub'
 inputs:
   repo-token:
     description: 'Token for the repository. Can be passed in using `{{ secrets.GITHUB_TOKEN }}`.'
+    required: false
     default: ${{ github.token }}
   stale-issue-message:
     description: 'The message to post on the issue when tagging it. If none provided, will not mark issues stale.'
@@ -64,7 +65,7 @@ inputs:
     default: ''
     required: false
   operations-per-run:
-    description: 'The maximum number of operations per run, used to control rate limiting.'
+    description: 'The maximum number of operations per run, used to control rate limiting (GitHub API CRUD related).'
     default: '30'
     required: false
   remove-stale-when-updated:
@@ -91,6 +92,10 @@ inputs:
     description: 'Delete the git branch after closing a stale pull request.'
     default: 'false'
     required: false
+  start-date:
+    description: 'The date used to skip the stale action on issue/pr created before it (ISO 8601 or RFC 2822).'
+    default: ''
+    required: false
 runs:
   using: 'node12'
   main: 'dist/index.js'