Add support for draft-06/7

[jdesrosiers]

We need to add support for the following keywords to support draft-06.

items - https://json-schema.org/keyword/draft-04/items
additionalItems - https://json-schema.org/keyword/draft-04/additionalItems
dependencies - https://json-schema.org/keyword/draft-04/dependencies
contains - https://json-schema.org/keyword/draft-06/contains

[Adityakumar37]

@jdesrosiers could you please explain this issue

[srivastava-diya]

Hi @jdesrosiers ,
I’ve already been working on the overlapping draft-04 keywords (items, additionalItems, dependencies) and added test coverage and handlers around those areas.
Since draft-06 follows much of the same behavior (except contains as it involves references), I’d be happy to work on this issue if that sounds good to you.

[Adityakumar37]

@srivastava-diya i would like to work with you

[jdesrosiers]

I just created a bunch of new issues. @srivastava-diya can you take #133 next because you implemented that in draft-1 and you already know all complexities involved.

Then, @Adityakumar37, you can take this one. It should be pretty trivial, just a copy of the current contains handlers and remove the minContains/maxContains stuff.

[jdesrosiers]

Also, I'm going to add draft-07 in scope for this issue because there are no more new keywords to implement once contains is done.

[Adityakumar37]

Hi @jdesrosiers, thanks for assigning the next draft-06 keywords.

I’ll take care of the draft-06/07 support.
As you mentioned, I’ll implement it by copying the existing contains normalization/error handler and adjusting it for draft-06/07 by removing the minContains / maxContains behavior.