ctqr 2.0

Changes with respect to version 1.0

• added interval-censored data
• pch >= 2.0 required
• fixed bug with plot
• added contrast in predict
• fixed potential problem with all.vars
• fixed bugs with weights
• fixed bug with nobs
• improved safety in asy: if something ‘goes wrong’, return the naif covariance matrix
• changed the default findagoodestimator to splinex = NULL