Add check of @Data_Supplementary slot variables
Merge branch 'master' of github.com:CenterForAssessment/SGP
Merge branch 'master' of github.com:CenterForAssessment/SGP
Allow SIMEX function to save coefficient matrices
Merge in SIMEX coefficient matrices
Merge branch 'master' of github.com:CenterForAssessment/SGP
Add grade as level in the SIMEX spline matrix list
add special use case check for SIMEX element of Coefficient_M
Add @.Data check for unique SIMEX coef matrices
Add grade to SIMEX coef matrix list for ALL computational options
Add grade to .get.percentile.predictions call.  Make name lowercase to match others
Change get.config so that it looks at all the last year grades.  Was cutting off only value when trying to run a single grade
Add check for the number of priors and panels before trying to set up ss.data when exact.grade.progression is TRUE
Add in panel data requirements (have at least one row of data and one panel or prior data) for sequential processing
refine error messages
Merge pull request #505 from adamvi/master

Initial SIMEX changes to save coefficient matrices and changes to config construction to allow for small subset of data to be run (TCRP)