JSON Marshal with references

Add the ability to marshal a schema that has resolved, recursive references.

Upstream 0.20.0

*.rebase from upstream

• fix resolution of recursive objects through remote ref

Temporary restricted fix to kin-openapi resolution

v0.2.7

specify go version

Added default value validation

This release adds validation to schemas that have default values specified so that incorrect usage like specifying a float value for a time field can be caught

Added Constructor Options and ability to clear reference properties

Added Constuctor Options. SwaggerLoader can now be configured using this common golang idiom.

Added functionality to clear Ref properties from loaded swagger (especially those that contain external references).
This is required by openapi3filter and dependent tools like oapi-codegen when producing a spec from the Swagger so requests can be validated

v0.2.4

Re-implements the visited using Ref Metadata that contains the full path of the original reference. Removes the merge step.

v0.2.3

Merge remote Components fix

Cache loaded remote schemas

Added support for caching the result of loaded and resolved remote schemas.
This prevents unnecessary network roundtrips and unhandled network errors resulting from throttling servers

v0.2.1

add nil check in request body validation (#108)