Include 2012 atomic mass evaluation data rather than downloading.
some header file changes
nucname::id(int)
updated nucname
first hack at refactor
updated element symbols
updated cython bindings
nucname tests pass
zzaam changed everywhere...segfaulting
UNTESTED: wrote znum(), anum() and snum()
Added znum(), anum(), snum() tests
fixed nuclide id bug when user just gave z-num
Prebuilt nucdata now builds
Some fixes for data, more needed
fixed data tests
fixed endf tests
fixed enrichment tests
discovered bug in atomic mass nucid. fixed but tests fail
fixed materials
fixed some more tests