Cleaned up tally lists introducing user_tallies and cmfd_tallies.
Add clear method to set.
Changed active tally lists to sets.
Added add_tallies subroutine to simplify new tally groups.
Change printing of basis for plotting mode.
3D lattice capability.
Consistently use lat for pointers.
Fixed hdf5_write_geometry for lattices.
Changed element component to universes on Lattice derived type.
Add lattice z position to trace information.
Started release notes for 0.5.1.
Updated install target to work with Debian packaging.
Suppress Makefile error if not a git repository.
Add Adam to list of developers.
Update copyright year to 2013.
Merge branch 'TallyCleanup'
Updated installation documentation with PPA description.
Merge branch 'master' into depletion
Remove unused dummy in add_tallies.
Changed arguments for add_tallies. Closes #141.