Changed <criticality> to <eigenvalue>.
Added comments in several MCNP model about curvature of supports.
Added comment about paraffin gap and concrete walls in MCNP model for HEU-MET-FAST-026 case 11.
Added comment in MCNP model for HEU-COMP-INTER-003 case 6 about errors.
Added comment about lattice dimensions in MCNP model for U233-COMP-THERM-001 case 3.
Added comment about diagonal egg-crate in MCNP model of MIX-COMP-THERM-002 case pnl-32.
Use 3D lattice for OpenMC model for HEU-MET-FAST-026 case c-11.
Truncated stainless steel rods in MCNP model for HEU-MET-FAST-026 c-11.
Added MCNP model for PU-MET-FAST-003 case 103.
Fixed up OpenMC model for PU-MET-FAST-003 case 103.
Update two benchmarks with multiple S(a,b) tables.
Fixed redundant definition of assembly in LEU-COMP-THERM-008.
Added MCNP models for LEU-COMP-THERM-008 cases 1, 2, 5, 7, 8, and 11.
Fixed several MCNP ICSBEP models.
Fixed MCNP model for heu-met-fast-018.
Fixed MCNP model for heu-met-fast-019.
Fixed formatting of materials in heu-sol-therm-013.
Cleaned up material definitions in u233-sol-therm-001.
Fixed source in MCNP model for heu-met-fast-021.
Fixed source in MCNP model of ieu-met-fast-002.