Allow connection endpoints for list nonterminals

pages/docs/changelog.md

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

ragconnect.base/src/main/jastadd/Configuration.jadd

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

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

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

...in/jastadd/intermediate2mustache/MustacheNodesToYAML.jrag

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

ragconnect.base/src/main/jastadd/scanner/Keywords.flex

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

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

ragconnect.base/src/main/resources/MqttHandler.jadd

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

...nnect.base/src/main/resources/mappingApplication.mustache

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

...nect.base/src/main/resources/ragConnectVersion.properties

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