6.7.0

What's Changed

• docs(Spec): update docs about implicit Property shortcut in combination with OA\Items by @DerManoMann in #2127
• feat(Spec): improve handling of empty schemas and type consistency by @DerManoMann in #2126
• feat(Spec): add encoding shortcut by @DerManoMann in #2128
• refactor(Spec): create Contracts namespace for all spec related interfaces by @DerManoMann in #2129
• Fix/strict config keys and isvalid by @DerManoMann in #2132

Full Changelog: 6.6.0...6.7.0