[Debian-science-sagemath] Python 2 matplotlib package required for sagemath

[Sandro Tosi]

> You are right, I didn't notice the new matplotlib2 package and sagemath failed to build due to the missing matplotlibrc in python-matplotlib-data.

this should be fixed, does sagemath build fine now?

-- 
Sandro "morph" Tosi
My website: http://sandrotosi.me/
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