Add toggle-class with switch argument
Merge pull request #50 from immoh/add_toggle_class_with_switch

Add toggle-class with switch argument
guard against nil contentType

- As of ClojureScript
  0.0-2280 (https://github.com/clojure/clojurescript/commit/774d4588581f6d29a1b6b2555171d3f3d36c2c83),
  `re-find` will throw a TypeError for nil. If the caller of
  `jayq.core/preprocess-request` does not pass in a `contentType`, we
  should not be associng `:data` into the request.
Merge pull request #51 from bostonaholic/master

guard against nil contentType
Forgot to update these before releasing 2.5.2

2.5.2 has also been pushed to Clojars
Update closure-compiler externs url
Merge pull request #52 from suweller/master

Update closure-compiler externs url