Patch by Milan Oberkirch.

Printout of keyword args should be in deterministic order in
a mock function call. This will help to write better doctests.

Patch by Saimadhav Heblikar. (2 head merge)

Original patch by Amaury Forgeot d'Arc with a test by bdettmer.

Patch by Nikolaus Rath.

Patch by Amandine Lee.

Patch by Víctor Terrón.

Patch by Skyler Leigh Amador.

Patch by εσχατοκυριος.

Patch by Katherine Busch.

Patch by Saimadhav Heblikar.