updated Pull Request Template for round 13 final

.github/PULL_REQUEST_TEMPLATE.md

@@ -6,13 +6,14 @@ REQUEST AGAINST THE CORRECT BRANCH
 
 ....................................
 
-master = bug fixes directly 
-addressing the current preview round
+master = currently not accepting pull
+requests as we prepare for our Round 13
+final release.
 
-round-X = new features, frameworks, 
-tests, and any other larger changes 
-that you would like to see in the 
-next round
+round-14 = new features, frameworks, 
+tests, bug fixes, and any other 
+changes that you would like to see in 
+the next round.
 
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