adopt MLXFast.scaledDotProductAttention (#23)

.circleci/config.yml

@@ -43,12 +43,17 @@ workflows:
     when:
       and:
         - matches:
-            pattern: "^(?!pull/)[-\\w]+$"
+            pattern: "^(?!pull/)[-_./\\w]+$"
             value: << pipeline.git.branch >>
         - not: << pipeline.parameters.nightly_build >>
         - not: << pipeline.parameters.weekly_build >>
     jobs:
-      - mac_build_and_test
+      - hold:
+          type: approval
+      - apple/authenticate:
+          context: pr-approval
+      - mac_build_and_test:
+          requires: [ hold ]
 
   prb:
     when: