Look for souce config in the correct place.
Cast non-grouped results.

 - Cast normal non-grouped results.
 - Add comments about hard-coded group limits.
Throw exceptions for unsupported operations.
Don't run casting test.
Throw exceptions for basic errors.
Add success header to read test.
Hard-code query parser to Extended DisMax.
Add defType to query builder tests.
Update test config to match real model config.
Merge pull request #29 from mdx-dev/updates

Updates