Initial support for many apis per key.
Tests passing.
Fix test count.
forApi: -> forApis:
Add a supportsKey function to the api object.
Use supportsKey to check for key validity.
Fix API output.
new-key script now supports many apis.
Abstract bulk api exists check.
Abstract bulk key linking to api code.
Make sure the key exists before we link it to apis.
Make sure to return the key from #create.
Make KeyError accessible.
Implement #linkToApi on a key.
Added #supportedApis to the tests and key factory.
Output apis to which a key belongs in our API.
Update test count.
Add hkeys to the redis commands list.