SciTools/iris — pull request #783 by pp-mo (2013-10-03 16:50:41+00:00)
Title: Moved concatenate from 'iris.experimental' to 'iris'.

Aside:
I considered removing the block comment of "TODOs" from the module source into GitHub issues.
After discussion with @rhattersley, decided this doesn't achieve anything useful, so I have left them.