Changes from 1.3 to 2.0:
Changes from 1.3 to 2.0:
- require MzScheme >= 301.5 for or/c.
- union to or/c, again.
- added contract/c, flat-contract/c, contract-of, predicate-of
Changes from 1.2 to 1.3:
- reverted or/c to union, since we can't rely on or/c being present in
all v300 systems. Have to rethink this transition.
Changes from 1.1 to 1.2:
- Fixed packaging error that omitted contract-utils.ss.
Changes from 1.0 to 1.1:
- Added version spec to doc.txt, source code
- Replaced union contract operator (now deprecated) with or/c
- Added license clarification to contract-utils.ss.