Merge pull request #336 from dbetebenner/master

Updates to include more PNG output and inclusion of NAPLAN data in SGPstateData
Merge pull request #337 from dbetebenner/master

Minor update to summarizeSGP mean_na function
Merge pull request #338 from dbetebenner/master

Update to 1.0-3.0 including spelling corrections and numerous other minor tweaks
Merge pull request #339 from dbetebenner/master

Fix of goodness of fit plot prior achievement level rendering
Bug fix in getPercentileTableNames impacting cohort to baseline replacement