NEWS for sure package
Changes for version 0.2.0
- New function 
surrogate for returning the surrogate response values used in calculating the surrogate-based residuals. The surrogate response values can be useful for checking the proportionality assumption of fitted cumulative link models, among other things. 
- Jittering (on both the probability scale and the response scale) is now available for fitted cumulative link models based on packages 
MASS, ordinal, rms, and VGAM (#18). 
- Added support for vector generalized additive models from the 
VGAM package (i.e., objects of class "vgam"). 
- New data sets 
df4 and df5 for illustrating various uses of the surrogate residual for diagnostics an ordinal regression models. 
Changes for version 0.1.2