Merge branch '9-subtree-update' into 'dev'

libs/jastadd2.jar

pages/docs/extending.md

ragconnect.base/build.gradle

ragconnect.base/src/main/jastadd/Analysis.jrag

ragconnect.base/src/main/jastadd/Errors.jrag

ragconnect.base/src/main/jastadd/NameResolution.jrag

ragconnect.base/src/main/jastadd/Navigation.jrag

ragconnect.base/src/main/jastadd/RagConnect.relast

...onnect.base/src/main/jastadd/intermediate/Generation.jadd

ragconnect.base/src/main/jastadd/intermediate/Mappings.jrag

ragconnect.base/src/main/jastadd/parser/RagConnect.parser

...c/main/java/org/jastadd/ragconnect/compiler/Compiler.java

...onnect.base/src/main/resources/mappingDefinition.mustache

ragconnect.base/src/main/resources/ragconnect.mustache

...onnect.base/src/main/resources/receiveDefinition.mustache

ragconnect.base/src/main/resources/sendDefinition.mustache

ragconnect.tests/build.gradle

ragconnect.tests/src/test/01-input/tree/README.md

ragconnect.tests/src/test/01-input/tree/Test.connect

ragconnect.tests/src/test/01-input/tree/Test.jadd