Consider adding a `zipdict()` function

Please consider adding a zipdict() function that mimics the zip() function but on dictionaries This utility allows to iterate the items (key,value) of a list of dictionaries based on their common keys.

The necessity for such a function is described in this SO question: http://stackoverflow.com/questions/16458340/python-equivalent-of-zip-for-dictionaries

A starting implementation would be based on @Volatilty's suggestion in the above question:

def zipdict(*dcts):
    if dcts:
        for k in set(dcts[0]).intersection(*dcts[1:]):
            yield k, tuple(d[k] for d in dcts)

The issue names no repository files, entry points, or tests; start with the proposed implementation and the linked Stack Overflow question. Check the project's conventions for adding public utilities and tests, then confirm behavior for common keys and multiple dictionaries. Done means the function is integrated, tested, and its expected behavior is documented.