Update pull_request_template.md

.github/pull_request_template.md

@@ -1,8 +1,18 @@
-## Changes
-- List all major changes made here
+# Change
+
+_Please remove everything in italics._
+
+_Add a brief and concise imperative sentence on what this PR does._
+_Example: Edit PR template to improve efficiency_
 
 ## Change reason
-List the reason you are making the change here.
+
+_Provide a brief description based on the type of change._
+
+1. _Functionality - explain the problem, why the solution was chosen, and any specifics that might be worth highlighting_
+
+2. _Refactoring  - why there was a need for the change, how the changes address this problem, and steps to take to avoid the same mistakes (better documentation, another step in PR reviews, simplification of system design)_
 
 ## Comments
-- Add any other comments about the PR here
+
+_Add any other comments about the PR here. In particular add information relating where a reviewer should start and any specific concerns that you came across._