Multi-token macro names

[WreckedAvent]

In some other languages, ? and ! are used to help distinguish between special forms of functions/syntax. Livescript has several of these, such as require!/require, lisp is very fond of ?, f# has things like let!/let.

Is there any planned support for these?

[disnet]

We had them in 0.x and I do want to add them back. readtables #535 might be sufficient but if not we can discussion how to add true multi-token macro names back.