pgmj, 1 year ago to random

New preprint on #psychometrics criteria for "valid & reliable" measures, and reporting guidelines https://doi.org/10.31219/osf.io/3htzc

Also, we present an #rstats package to simplify psychometric analysis with #Rasch and combine analysis code and documentation with #quartopub https://pgmj.github.io/raschrvignette/RaschRvign.html