Feat enable version (#34)

* feat(version): enable searching specific versions of the powertools website

* feat(version): return error on incorrect version and list available version

* chore(doc): fixup PR template to include change so will be picked up by release prep.

* chore(doc): changelog

Author: walmsles

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,9 +1,13 @@
-## Description
+# Pull request
+
+## Changelog
+
 Please include a summary of the change and which issue is fixed. Include relevant motivation and context.
 
 Fixes # (issue)
 
 ## Type of change
+
 Please delete options that are not relevant.
 
 - [ ] Bug fix (non-breaking change which fixes an issue)
@@ -13,9 +17,11 @@ Please delete options that are not relevant.
 - [ ] Test coverage improvement
 
 ## How Has This Been Tested?
+
 Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.
 
-## Checklist:
+## Checklist
+
 - [ ] My code follows the style guidelines of this project
 - [ ] I have performed a self-review of my own code
 - [ ] I have commented my code, particularly in hard-to-understand areas