- optimize mqtt-send performance (resolve handler only once)

- changed semantics of ViaTest slightly (setting same value for inputBoth does not change to newly send value as the "FromMqtt-" and "FromRest-" part is not prepended, and therefore it stays the same)

- differentiate between push-send and pull-send

- rename nonterminal (M)Ros2Rag to (M)RagConnect, and attribute ros2rag to ragconnect
- rename starter to safety
- make receiverstub, receiverstub not depend on safety
- make tests not depend on common (copied proto files)

- Base: inserted DefaultMappings did not account for existing other mappings, but always use type of token
- Base: MqttHandler was not able to have multiple newConnections for the same topic
- Goal: Changed way how last update is handled (now packed into currentStep)
- Goal: Added StartStep
- Goal: Changed wait to be in milliseconds

- see #26

- sender/receiver: reuse generated MqttUpdater
- base: added option "--verbose" to print stacktrace if any
- base: move mqtt default port definition to MqttUpdater
- base: add option in MqttUpdater to suppress welcome message
- starter: create 10 joints, use correct mqtt topics

- also try to setup CI (might fail)

- Copied (and modified) buildSrc from relast. Added compilerLocation property to set a jar to execute.
- Completed example code with computation attributes
- Fixed various bugs in Generation.jadd
- Wrap application of mappings with try/catch and let mapping methods throw Exception
- Add grammar modification for TokenComponent used as source in dependency definition
- Add grammar extension to include relations generated by dependency definitions
- Prepare Ros2Rag.relast for default mappings (not implemented yet)

- allow multiple mappings for update definitions
- in mappings, remove target variable name and prepare for more types, e.g., arrays
- add required option to specify name of root node in Compiler
- copy MqttUpdater in compile step