BAS Version 1.5.5

This version of the package provides some minor bug fixes and addresses some memory issues identified in CRAN checks.

• Changed the default in bas.lm and bas.glm to force.heredity=FALSE (triggered by errors with Solaris).

• Modified prior probabilities to adjust for the number of variables always
  included when using include.always. Pull request #41 by Don van de Bergh. Issue #40

• Added contrast=NULL argument to bas.lm and bas.glm so that non-NULL contrasts do not
  trigger warning in model.matrix as of R 3.6.0. Bug #44

• Added check for sample size equal to zero due to subsetting or missing data
  Bug #37