- fix JTD serialisation (remove leading comma in objects with only optional properties) (#2190, @piliugin-anton)
- empty JTD "values" schema (#2191)
- empty object to work with JTD utility type (#2158, @erikbrinkman)
- fix JTD "discriminator" schema for objects with more than 8 properties (#2194)
- correctly narrow "number" type to "integer" (#2192, @JacobLey)
- update Node.js versions in CI to 14, 16, 18 and 19