Merge branch '#18-WithoutVariants' into 'master'

src/main/java/teetime/stage/InstanceCounter.java

src/main/java/teetime/stage/InstanceOfFilter.java

src/main/java/teetime/stage/NoopFilter.java

src/main/java/teetime/stage/ObjectProducer.java

src/main/java/teetime/stage/PortTypeConfiguration.java

src/main/java/teetime/stage/Relay.java

src/main/java/teetime/stage/StartTimestampFilter.java

src/main/java/teetime/stage/StopTimestampFilter.java

src/main/java/teetime/stage/basic/Delay.java

src/main/java/teetime/stage/basic/Sink.java

...n/java/teetime/stage/basic/distributor/CloneStrategy.java

...time/stage/basic/distributor/CopyByReferenceStrategy.java

...ain/java/teetime/stage/basic/distributor/Distributor.java

...teetime/stage/basic/distributor/IDistributorStrategy.java

...a/teetime/stage/basic/distributor/RoundRobinStrategy.java

...main/java/teetime/stage/basic/merger/IMergerStrategy.java

src/main/java/teetime/stage/basic/merger/Merger.java

...n/java/teetime/stage/basic/merger/RoundRobinStrategy.java

...n/java/teetime/stage/explorviz/KiekerRecordTcpReader.java

src/main/java/teetime/stage/io/DbReader.java