This includes support for
- parsing dimensioned alias parameters
- flattening non-var decls with multiple packed dimensions
- converting arrays of structs
- inferring struct types for decls with initializations

- NestTF refactored to cover all package items
- fixed issue where type traverse skipped typedefs

support for generate constructs outside of generate regions and genvar declarations in generate loops

- generally cleaned up and documented the Logic conversion
- made exprToLHS a shared helper function, now uses Maybe
- ported existing local exprToLHS helpers to the new one