pyne/pyne — pull request #145 by scopatz (2013-08-03 07:23:10+00:00)
Title: MaterialLibrary class, Material JSON I/O, and some nuc_data fixes

This adds a MaterialLibrary class for handling collections of materials. In the process, I also added a JSON persistence mechanism for both the basic Material class. I also discovered and fixed some nuc_data issues with the PNNL data, so this may trigger a rebuild. The MaterialLibrary supports both HDF5 and JSON persistence mechanism.

Since @elliottbiondio is out of town for the next couple of weeks, maybe someone else can take a look at this. Thanks!