- added type class for looking up elements in scoped conversions

- support casts of generate scoped expressions
- support casts to sizes involving genvars

- number literals are parsed rather than stored as strings
- fix array query functions used on non-trivial number literals
- more efficient expression simplification recursion
- expanded constant folding scenarios

- support ubased unsized bound to ports using injected constants
- explicit context-aware literal sizing for complex expressions
- fix infinite loop case in NestPI conversion
- elaborate size-casts of converted literals

- significant refactor of struct conversion
- significant refactor of typedef conversion
- scoping support in multipack conversion
- scoping support in typeof conversion

- interface conversion only waits for type resolution of modports
- typeof conversion resolves struct field accesses
- logic conversion only converts logic data declarations
- struct conversion only converts within modules
- fix nested type traversal order causing premature struct conversion

- modports can use complex expressions
- update interface_infer test for consistency across simulators
- fix interface inlining of implicitly typed data declarations

- fix wildcard imports shadowing other items
- fix explicit imports depending on other items
- fix example export in package.sv

- handle cases where wildcard equality short-circuits to 0
- move checking for extraneous X/Z to wildcard conversion
- add exhaustive test coverage

- most binary operators
- ternary expressions
- bitwise negation
- number literals
- size casts
- concat and repeat expressions