Enabling to do 'splitting on' with non-zero exponents for unbndfun, which is not implemented in Chebfun v4.
Enabling to do 'splitting on' with non-zero exponents for unbndfun, which is not implemented in Chebfun v4.

asgeirbirkis/chebfun,alshedivat/chebfun,ilovejs/chebfun