Better Rspec stubbing.
Use a hash-with-indifferent-access for the Attributes.
Use indifferent access for key remapping.

And use an inject.
Correct spelling.
Change spec for new indifferent access.
Anticipatory updates to VERSION and CHANGELOG.
Accurate release date.
Update README for indifferent access of seed datum attributes.
Improve specs for more indifferent access.
Merge remote-tracking branch 'origin/master' into use-hashes-with-indifferent-access-70780268

Conflicts:
	CHANGELOG.md
Merge pull request #8 from centro/use-hashes-with-indifferent-access-70780268

Use hashes with indifferent access for attributes