Add hash iterator lifted out of api methods.
Add hash iterator lifted out of api methods.

davengeo/github,GistBox/github,anabhilash619/github,firstval/github,yaoxiaoyong/github,wicky-info/github,MalachiTatum/github,samphilipd/github,durai145/github,cocktail-io/github,piotrmurach/github,peter-murach/github,befairyliu/github,joshsoftware/github