fix typo
Define fields for all resource types
remove testhooks support
Define ResultSpec and ListResult
Remove GetParamsCheckMixin and ControlParamsCheckMixin
Change signature for data.get to take ResultSpec args, and no options

This also changes the endpoint test method callGet to take a path rather
than kwargs.
indicate whether an endpoint returns a collection

..and the plural form of a ResourceType
add support for query args in links
factor out string-to-boolean operations
Add getEndpoint method to DataConnector
Rewrite REST and JSONRPC support

Now with universal filtering, sorting, pagination, and field selection!
fix up docs for logchunks
Update README.md