Merge branch 'json-pointer' into 'master'

README.md

build.gradle

src/main/jastadd/Backend.jadd

src/main/java/org/jastadd/relast/compiler/Compiler.java

src/test/jastadd/resolver/MyRefResolver.jadd

src/test/jastadd/resolver/ResolverUtils.jadd

src/test/jastadd/resolver2/ResolverUtils.jadd

src/test/jastadd/serializer-manual-relative/JsonPointer.jrag

...test/jastadd/serializer-manual-relative/Serializer.relast

src/test/jastadd/serializer-manual/JsonPointer.jrag

src/test/jastadd/serializer-manual/Serializer.relast

src/test/jastadd/serializer-pointer/Serializer.relast

src/test/java/org/jastadd/relast/tests/SerializerManual.java

...va/org/jastadd/relast/tests/SerializerManualRelative.java

...test/java/org/jastadd/relast/tests/SerializerPointer.java