The Doc says the $.jCanvas object has the 'version' property, but alert($.jCanvas.version) says 'undefined'.
@Caleb531 just fixed the documentation so that future users will avoid the confusion @lxmfly123 expressed.
UPDATE (2013-01-25): @Caleb531 now builds jCanvas with build.py, which auto-generates a "YY.MM.DD" version in jcanvas.js and jcanvas.jquery.json.