support mut in bindings

[bbarker]

trafficstars

I may be missing it but it seems like you can't current do something like:

mut state <- ...;

As it results in an error like:

32  |             mut state <- ...;
    |                 ^^^^^ no rules expected this token in macro call
    |

[bbarker]

I guess the workaround is fairly trivial though, just an extra line of code:

state <- ...;
let mut state = state;

[hadronized]

Yeah, a PR to fix that should be fairly simple, I think. :)

[bbarker]

Thanks, sounds good - I will take a look when I get some time.