Merge branch 'master' of github.com:FluxML/Flux.jl

Author: ViralBShah

.github/pull_request_template.md

@@ -9,4 +9,4 @@ the right direction since it can be hard to change later.]
 - [ ] Tests are added
 - [ ] Entry in NEWS.md
 - [ ] Documentation, if applicable
-- [ ] Final review from `@dhairyagandhi96` (for API changes).
+- [ ] API changes require approval from a committer (different from the author, if applicable)