#265 Fix: Optional Json Schema

[jacob-alford]

• Optional Json Schema no longer wrongly remove inner schema properties
• Optional Json Schema will relay optionality to its parent, and will no longer be present in required fields

closes #265

[coveralls]

Pull Request Test Coverage Report for Build 5365234395

• 11 of 11 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 5339580883:	0.0%
Covered Lines:	2314
Relevant Lines:	2314

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💛 - Coveralls