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.