ensure type for cast is normalized as lowercase and add test case. fixes #42
Merge pull request #43 from vanetix/typecasts

Fix uppercase type casting issues
add argument to validator `validate` function to validate only values passed in
fix issue with update validating all values, modify tests to reflect this. Fixes #44
Merge pull request #45 from vanetix/validations

Fix update validation issues
Fix validation errors with uppercase types and added tests. Fixes #46
Merge pull request #47 from vanetix/validations

Fix uppercase type validation errors