desitarget 0.15.0

0.15.0 (2017-09-29)

• Refactored desitarget.QA to calculate density fluctuations in HEALPixels
  instead of in bricks [PR #217]
• Updated desitarget.io for the DR5 RELEASE number [PR #214]
• Updated desitarget.QA to produce QA plots [PR #210]
  • Has a simple binary that runs the plot-making software in full
  • Creates (weighted) 1-D and 2-D density plots
  • Makes color-color plots
  • Produces a simple .html page that wraps the plots, e.g.
    http://portal.nersc.gov/project/desi/users/adamyers/desitargetQA/
• Changes for mocks [PR #200]:
  • Fix isLRG vs. isLRG_colors
  • Correct random seeds when processing pix in parallel
  • Misc other small bug fixes
• Added mpi_select_mock_targets
• Added desitarget.mock.sky.random_sky [PR #219]