* allow param update by identity + hashed value storage
* add specActions.changeParamByIdentity
* add identity-based lookup support in spec selectors
* migrate `changeParam` usage to `changeParamByIdentity`
* migrate usage of `parameterWithMeta` to `parameterWithMetaByIdentity`
* update invocations of `changeParamByIdentity` to match fn signature
* use OrderedMap throughout hash-based selectors for consistency
* normalize usage of ParameterRow `onChange`
* migrate bug 4557 tests to reflect new ParameterRow interface
* remove exclusive test blocks
* linter fixes
* copy Parameters changes into OAS3 wrapper
* use rawParam for meta lookups in ParameterRow
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