Update DisCoPy to v1.0 - Githubissues

Building upon its companion PR https://github.com/discopy/discopy/pull/148, this PR makes the necessary changes to update DisCoPy to v1.0:

replace rigid by pregroup everywhere
replace biclosed by categorial everywhere
account for the new signature Diagram(inside, dom, cod) using the method Diagram.decode
rename hidden attributes which are no longer hidden, e.g. ._data goes to .data
replace diagrammatic conjugate by transpose
swap left and right currying

CQCL / lambeq