Update the rules for member access:
- Simple member access `a.b`
- If `a` names a scope, performs name lookup and optionally `impl`
lookup.
- Otherwise, `a.b` is shorthand for `a.(typeof(a).b)` and always
performs instance binding.
- Compound member access `a.(m)` does optional `impl` lookup and always
performs instance binding.
- This is a change from only performing instance binding if `m` is an
instance member.
- New operation `a.impl(m)` is introduced. It always performs `impl`
lookup, and nothing else.
- The `BindToType` interface is removed. Only instance binding may be
customized (using the `BindToValue` and `BindToRef` interfaces).
As a result, member access doesn't use whether the right operand is an
instance member anymore. Instead, instance binding is performed whenever
it would be plausible, and a new syntax is used to opt out.
Assisted-by: Gemini via Antigravity
---------
Co-authored-by: Josh L <josh11b@users.noreply.github.com>
Co-authored-by: Richard Smith <richard@metafoo.co.uk>
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For accepted proposals, where ###### is the corresponding proposal's pull
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p######-slug.md will contain the main proposal text, where slug is a
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