Necessary for backwards compatibility.

But they aren't actually implemented yet.

These avoid the implicit conversion to BigInt for e.g. (foo << 10).

- Remove redundant operator emission code
- Specify types explicitly on public methods
- Add missing Bool operators
- Remove constant folding (this should happen in the backend)

rename id to cid, legalizeNames, better flo/dbl support in tester, better mux handling and check for uint/sint, support for bulk connect, filter ? as well