Using functions from a structure as infix operators

It seems it's not possible to do something like:

```
p = load parser;
foo `p.andThen` bar
```

A simple workaround is do a local binding in the scope and then just use that  (e.g. ``myAndThen = p.andThen; foo `myAndThen` bar``), but it gets cluttered quite fast - it would be nice if Yeti supported the above syntax.