Fix baseline config check.  Was looking at list, not list element and converting grade sequence to wrong thing (single string).
Merge branch 'master' of github.com:SchoolView/SGP
Revert "Fix baseline config check.  Was looking at list, not list element and converting grade sequence to wrong thing (single string)."

This reverts commit 23d3bee819848094bd7d55e46963cd55f3f5169a.
Fix spelling in message
Merge branch 'master' of github.com:SchoolView/SGP
Changes to allow one to use existing coef matrices to (re)produce SGPs prior to SIMEX
Add taus and move
Fix the extrapolated fitted values matrix by using .smooth.isotoize.row function.

Obtained SIMEX_SGPs from trial runs with Georgia data were ALL very low
(median of ~39 - 46)
Fix simex.matrix.priors when coef matrices not provided
Merge pull request #414 from adamvi/master

SIMEX fixes and a few other misc.