1.0.2: Fix cheapDiff bug.

Changelog:

• As per #5: adding values to a list could cause patches to fail when using cheapDiff. This version fixes that.
• New tests for this issue.

Fix bug with cheap diff.

As described in #2, there was a bug where the cheap diff function would produce incorrect diffs for lists.

This release fixes that issue and adds tests for the cheap diff function.

1.0.0

Initial version.