Merge pull request #667 from dbetebenner/master

Update of SGPstateData
Merge pull request #668 from dbetebenner/master

Update of updateSGP
Merge pull request #669 from dbetebenner/master

Numerous tweaks to README
Merge pull request #670 from dbetebenner/master

Changing logo
Merge pull request #671 from dbetebenner/master

Various refinements to README and minor fixes
Merge pull request #672 from dbetebenner/master

Update of SGPstateData
Merge in prior score vars - excluded when only baseline SGPs produced

"SCALE_SCORE_PRIOR", "SCALE_SCORE_PRIOR_STANDARDIZED" excluded even
when ONLY baseline SGPs have been produced.  Merge these variables in
for ALL cases
Merge pull request #673 from dbetebenner/master

Adding SCALE_SCORE_PRIOR to testSGP(1)
Add ability to use unique school names for WA (future school assignments)
Merge branch 'master' of github.com:CenterForAssessment/SGP
Fix to school names
Update to WA SGP_Configuration for studentGrowthPlots
Merge pull request #674 from adamvi/master

Update combineSGP and studentGrowthPlot_Styles for WA