Changes for version 0.02
- Critical update: the version 0.01 did not work in %hash form because of boneheadedness, but should now (using Tie::ExtraHash vs. Tie::StdHash)
- Interface change, ->new will return the object by default, and in list context return both the object and the hash
- DELETE handled properly, CLEAR now handled as well.
Modules
Keep track of whether a hash is dirty or not