avoid superfluous computations when computing regression gradient standard errors
removed (now) needless MPI-specific section of regression routine
Bad commit. Reverting.

Revert "avoid superfluous computations when computing regression gradient standard errors"

This reverts commit 3dd689852d03a9c511c33a9888a43ccf5762e048.
tweaked regression gradient standard errors for speed
Revert "tweaked regression gradient standard errors for speed"

This reverts commit ef48e10576b13bd5cbf754c5378f48afe3d0e7b1.
"tweaked regression gradient standard errors for speed"
Merge branch 'master' into npRmpi
added argument to kernel_weighted_sum_np to explicity suppress parallelization if desired
fixed regression in new ll regression code
Revert "added argument to kernel_weighted_sum_np to explicity suppress parallelization if desired"

This reverts commit 50ee89aec1a58d6dc2848fda31702f6d919e310a.
bug fix, + suppress parallel argument to kernel_weghted_sum_np
Merge branch 'master' into npRmpi