some e's somehow slipped through and were not converted to np.e
Merge remote-tracking branch 'upstream/staging' into staging

Conflicts:
	pyne/endf.pyx
Merge remote-tracking branch 'upstream/staging' into staging
Merge remote-tracking branch 'upstream/staging' into staging
Merge remote-tracking branch 'upstream/staging' into staging
Merge remote-tracking branch 'upstream/staging' into staging
Use rxname for half_life database generation
Merge upstream staging
use rxname instead of string in decay data
update gamma ray test
subsume half_life data into level data
build level data first and use the C++ interface to speedup decay parser
bugfixes
remove old ensdf tools and tests

Also improve branch ratio behavior in edge cases
Added ZZZAAA function to nucname
Added back license
Fixed license issue
Fixed spacing issue in cpp_nucname.pxd
Fixed spacing issue in nucname.pyx
Added documentation for new ZZZAAA function to nucname.rst