v7.0.0-beta.3

Added the new keywords from draft 2019-09:

• unevaluatedProperties and unevaluatedItems (require option unevaluated to be supported). Please note that an additional generated code may be added to track evaluated properties, even if these keywords are not used).
• dependentProperties and dependentSchemas (require option next to be supported). These keywords replaced dependencies that is still supported though for draft-7 compatibility.
• maxContains and minContains (require option next to be supported). See docs and examples here