[clj-url "1.0.2"]
(clj-url.core/parse "http://www.google.com") => {:host "www.google.com", :protocol "http"}. Parse will return a map containing one or more of the following keys: :protocol, :host, :port, :path, :query, :username, :password.
`(clj-url.core/emit {:host "www.google.com", :protocol "http"}) => "http://www.google.com". Emit takes a map containing one or more of the keys listed above, and returns a string. Emit will automatically escape invalid characters, replace strings with '+', etc.