Update DisCoPy support to 1.1.3

[Thommy257]

Merge the following changes from #80:

• replace discopy.rigid with discopy.pregroup everywhere
• replace discopy.biclosed with discopy.grammar.categorial everywhere
• Use Diagram.decode to account for the change in contructor signature Diagram(inside, dom, cod)
• update attribute names that were previously hidden, e.g. ._data becomes .data
• replace diagrammatic conjugate with transpose
• swap left and right currying

[toumix]

Hurrayyy 🎉