Creating BOTTILT functions under prs_functions.py
Merge branch 'master' into prs
added some efficiency changes via numexpr
Merge branch 'master' into prs
Merge branch 'master' into prs
new extension tests
Merge branch 'master' into prs
Merge branch 'master' into vel
Merge branch 'master' into prs
Merge branch 'master' into prs
Finalized BOTTILT functions in prs_functions.py
prs_functions.py
Final edits to PRS functions
Merge conflicts resolved.  Merged in Luke's changes to implement magnetic_declination from the C WMM model instead of geomag.
Added met_functions and cleaned up some others
added to met_functions
added test_met_functions
fixed function names
Fixes met & vel unit tests
Update data/README.txt