Merge pull request #27 from driggl/release

Release v0.3.0

Add top-level class documentation for all defined classes

Fix nested table issue for validation errors

Validation errors are called with an array of error details
The serializer returned [[]] in that case

Fix naming clash in rails applications

Rails controllers have config method defined and this one overrode that

Bump version to 0.1.7

Bump version to 0.1.7

Bump version to 0.1.7

Bump version to 0.1.7

Bump version to 0.1.5

Upgrade CI image to use new ruby version