addreg 3.0

• method option added: fit using combinatorial EM or single parameter expanded EM algorithm
• accelerate option added: use turboEM to allow acceleration of EM algorithm
• Corrected an error in the calculation of deviance residuals for family = negbin1
• Corrected an error in the calculation of null deviance for family = negbin1
• (Minor change) Change iter to return a vector of two values
  addreg_3.0.tar.gz
  addreg_3.0.zip