Default decay library missing entries

[Rademacher]

The default decay library/ENDF-VIII reduced decay lib coming with ONIX appears to be missing data for a number of excited states even though they are potentially being produced/production cross sections for them exist. The entries are present in the not yet reduced libraries, and the problem only occurs for states generated through (n,gamma)X reactions - states stemming from decays are all present. I'd assume there is a related bug in the script doing the reduction - I haven't been able to find which one that is though.

Here is the list of missing states:
Ba-133*, Yb-176*, Lu-176*, Hf-177*, Hf-178*, Hf-179*, Hf-180*, Hf-182*, Ta-182*, W-183*, W-185*, Re-188* (and then also Re-188), Os-189*, Os-190*, Os-191*, Os-192*, Ir-192*, Ir-193*, Pt-193*, Pt-195*, Pt-197*, Pt-199* (and then also Pt-199), Au-198*, Hg-199*, Pb-207*, Po-211*, Pu-237*, Bk-248*

As a special case, Th-229* is in fact not part of ENDFVIII, but present in other libraries.

[Rademacher]

For now I have manually added the missing decay data from the not yet reduced ENDFVIII decay library (with the exception of Th-229*, this I took from JEFF3.3) - see #12. Long-term we should try to figure where this came from, and maybe check how much of a difference this makes/if we need to check old results.