References to/from local variables are not correctly resolved

[JonatanWaern]

Notably:

• Reference bindings from refs in methods to local declarations is not correctly made
• Local declarations do not correctly shadow outside declarations (!)

[JonatanWaern]

Seems that scoping, and variable declarations from within methods has not even been attempted yet. Moving from bug to feature request.

[JonatanWaern]

First attempt at this tracked at #118, but needs testing.

[JonatanWaern]

Resolved to parity with object-level lookups at least, I think. Remaining works remain in the type system