rollout 0.8.6

Allow find_by_* methods to accept an options hash, so rails associati…

…ons don't blow up and prepare new version for release

Silence the metaclass warnings in active hash, bump gem version and r…

…un tests against rails 2.3.8

Version bump to 0.8.1

Prepare for release

reverted the extend-related changes that broke rails integration

added #destroyed? method to make Rails 2.3.5 associations happy

Deprecated include ActiveHash::Associations in favor of extend Active…

…Hash::Associations

Prepare for release of 0.7.6

Find with an id that does not exist now raises an exception (Pat Naka…

…jima)