Update Intel compile flags as suggested by @bhermanmit.
Replace pipeline for producing git SHA1 with single command.
Updated release notes for 0.5.4.
bumped version to 0.5.4
Fixed p_valid sampling of energy distributions.
Updated test results for three tests.

The prompt neutron energy distribution for Pu-240 second-chance fission (MT=20)
was affected by the bug in #249 for three tests.
Merge pull request #250 from nelsonag/p_valid

Fixed p_valid sampling
Fix typo 'indicies' affecting CMFD data in statepoint.
Remove DEPENDENCIES file.
Merge branch 'develop' into cmake
Change back to using -DGIT_SHA1.
removed filename from message, path_source_point instead
if user wants overwrite latest, source must be separate
fixed memory leak particle during sample external source sites
Fix out-of-bounds error when using OpenMP threading. Closes #255 on github.
Updated installation instructions.
Merge pull request #224 from mit-crpg/cmake

Transition build system to CMake
source present should only be written by master
Updated release notes with one more bug fix.
merged develop into cmfd_rbgs