Merge pull request #1 from mattpolzin/jsonapi-v6

update for JSONAPI v6

update for JSONAPI v5

update to JSONAPI v4 release

update to latest JSONAPI release candidate

update to v4 alpha of JSONAPI

Update to JSONAPI library version 3.0.0

Update JSONAPI dependency to first major release and reign in the swi…

…ftcheck dependency because there can be breaking changes on minor version bumps

Update dependency versions, update JSONAPI naming.

Update to Swift Tools version 5.0 and verify compilation for Swift 5.0

First successful build on its own