Version 0.3.5: rlm and gam tidiers, fixed bugs in felm and cv.glmnet

• Fixed small bug in felm where the .fitted and .resid columns were matrices rather than vectors.
• Added tidiers for rlm (robust linear model) and gam (generalized additive model) objects, including adjustments to "lm" tidiers in order to handle them. See ?rlm_tidiers and ?gam_tidiers for more.
• Removed rownames from tidy.cv.glmnet output