New Features
- draft 2019-09 support
- detects infinite loop in schemas
- new flag
-draftin commandjv - add examples in godoc
Bug Fixes
- eca6e45 sometimes $id getting applied more than once
- 1b9ea47 Compiler.Compile always return *SchemaError
Incompatible Changes
- extension api changed
- if "$schema" missing, it defaults to draft 2019-09 (latest) unless overridden