rvinecopulib 0.7.1.1.0

Update following a upgrade of the C++ backend vinecopulib to 0.7.1, see
https://github.com/vinecopulib/vinecopulib/blob/main/NEWS.md.

The main changes on the R end are:

• improved documentation,

• support for zero-inflated variables,

• added new Tawn copula family,

• new argument allow_rotations to disable rotations of copula families,

• added variable names to vinecop summary (#276)

• fixed handling of logistic distribution (#275)

• fix NA handling in vine() control checks (#266)

• allow bicop_dist() with tll (#268)