changes.txt

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.