CRAN release v2.15.2

Major changes

• Added multinomial models (qgcomp.multinomial.noboot and qgcomp.multinomial.boot)
• Plot for multinomial models (qgcomp.multinomial.noboot only)
• Changed qgcomp.boot to qgcomp.glm.boot and qgcomp.noboot to qgcomp.glm.noboot for clarity. The old functions still work (for now).

Minor changes

• Mice function (mice.impute.leftcenslognorm) to allow empty prediction sets
• mice.impute.leftcenslognorm has been given an alias mice.impute.tobit
• Added simulation of multinomial outcomes
• Code-base hygiene

Bug fixes

• Fixed some miscellaneous bugs in the print function for non-standard link functions.
• Fixing bug in model pointwisebound.noboot that gave non-sense confidence intervals