Reverting back to nans for no soln
Correcting error where certain selections of gaintype masks causes program to crash
Reverting to using chi2 to flag variance values that are too low
Adding new meta flags table, to mark data as bad when either gains or noise correction solns are missing
Merge branch 'master' of ssh://github.com/kartographer/SZA-CO
Merge branch 'master' of ssh://github.com/kartographer/SZA-CO
Adding new routines for gains smoothing, and small edit for meta flags