- explicit enum casts in source are converted to size casts
- conversion for basic pattern array literals of unsized numbers
- unsized number array literals preserve signing
- more aggressive ternary simplification

- the ternary expressions were previously used to decide the direction
  of generated part selects
- this fixes an issue where ternaries were generated for LHSs

- struct conversion handles directionality of fields
- struct conversion supports minus part selects
- fixed incorrect handling of directional part selects in multi-packed
  conversion
- multi-packed conversion defines standard ranges in terms of
  directional part selects for clarity
- fixed potential loop due to overeager untagging in multi-packed
  conversion

- adds support for using macros and macro arguments within the argument
  list to other macros
- fixes an issue where macros with arguments would have extraneous
  whitespace
- fixes handling of multiline string literals

- param type conversion properly supports deferred param type resolution
- fixed struct conversion incomplete Subroutine traversal
- struct conversion excludes param types from conversion
- parameters are defaulted to have integer type

- also fixes an issue where system tasks were inadvertently prefixed
  during the interface conversion