merged release changes back to master; updated version number
merged release changes back to master; updated version number

HaStr/kieker,kieker-monitoring/kieker,HaStr/kieker,kieker-monitoring/kieker,kieker-monitoring/kieker,leadwire-apm/leadwire-javaagent,kieker-monitoring/kieker,HaStr/kieker,leadwire-apm/leadwire-javaagent,kieker-monitoring/kieker,HaStr/kieker,HaStr/kieker