Merge pull request #2781 from tianon/hylang

Update Hy to 0.12.1

library/hylang

@@ -1,7 +1,7 @@
 Maintainers: Paul Tagliamonte <[email protected]> (@paultag)
 
-# https://github.com/hylang/hy/tree/0.12.0
-Tags: 0.12.0, 0.12, 0, latest
+# https://github.com/hylang/hy/tree/0.12.1
+Tags: 0.12.1, 0.12, 0, latest
 GitRepo: https://github.com/hylang/hy.git
-GitFetch: refs/tags/0.12.0
-GitCommit: dda456ddd9d76560db869f2b6dd65a04d073c1bd
+GitFetch: refs/tags/0.12.1
+GitCommit: 7a4a2ca6687da381a2b67598b90a2e28beeceaed