Update cran-check.txt

Update docs

Record v0.1.0 for CRAN release

Record CRAN release candidate 0.1.0

Switch Gamma_pm for mreg linear yreg linear to chain rule

- This is more readable than VV2013 Appendix p5-6.

Explain Gammas for tnie/pnie for mreg linear yreg linear interaction …

…t case

Make SAS macro corrections easier to read by reviewers

Move sas reference results to a dedicated folder