pleasantone

"""
This comes from Mahmoud Hashemi @mhashemi found at:
https://gist.github.com/mahmoud/db02d16ac89fa401b968

This is an extension of the technique first detailed here:

http://sedimental.org/remap.html#add_common_keys

In short, it calls remap on each container, back to front, using the accumulating
previous values as the default for the current iteration.