- delegate cast type and sign resolution to TypeOf conversion
- internal support for injecting data declarations into statements
- fix size and sign of unbased unsized literals used in casts
- avoid generating many unnecessary explicit casts
- support casts which depend on localparams within procedures
- expression traversal correctly visits types within type casts
- fix typeof on expressions of net types
- handle additional edge cases for unsized integer array patterns
- preserve signedness of implicitly flattened unpacked integer arrays

- full import and export support
- simplify AST representation of import and export
- allow package-scoped identifiers invoked as subroutines
- use scoped name resolution for identifiers in packages
- merge package item nesting conversion into package conversion
- fix handling of colliding enum items in separate modules
- fix visiting enum item exprs in types

- assertions, gen case, and inout
- simplify block codegen
- remove blank lines in tasks with no inputs

- module instances with modport bindings are now inlined
- support for modports in generate loops
- support for generic interfaces
- implied modport instance propagation
- add error message for interface instances missing port list

- 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

- elaborated literals larger than 32 bits are given an explicit size
- constant folding no longer encodes illegal negative numbers

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

- removed repetition in dimension query conversion
- removed repetition in package item nesting conversion
- packing item nesting conversion short circuit
- param type conversion doesn't bother renaming non-param type instances
- implement showsPrec for certain expression cases

- single bit localparams retain explicit range
- fix $bits on unsized literals
- use Implicit over Maybe for underlying type

- constant folding supports hex numbers
- simplify mod
- simplify pow
- elaborate !(a == b) into a != b

- Trace comments cover module items, decls, and stmts
- Added pseudo-lexer to Alex parser for monadic Position production
- Added Position to every DeclToken
- Removed Comment PackageItem
- Added CommentStmt and CommentDecl
- Fixed traversal skipping outer MIAttr ModuleItems
- Generally cleaned up Parser modules