Ability to tally arbitrary MT for analog tallies.
Remove special (n,xn) tallies. Need to fix statepoint.py.
Add *.binary files to .gitignore.
Ability to tally arbitrary MT for trackelngth tallies. Still need to change score_all_nuclides.
Tally arbitrary MT for tracklength tallies with 'all' nuclides. Closes #130 on github.
Add score_bins > 0 to print_tally.
Fix reading of scatt_order in statepoint.py.
Add all MTs to score_types in statepoint.py.