fit a zero-inflated regression

Given a design and formula, fit the zero inflated regression, storing the fits in slots fitC and fitD

fit(object, response, ...)

# S4 method for LMERlike,missing
fit(object, response, silent = TRUE, ...)

Arguments

object	inheriting from `LMlike`
response	a vector, same length as the design, or if missing then use the current response
...	currently ignored
silent	mute some warnings emitted from the underlying modeling functions

LMlike or subclass