Merge branch 'master' into signal-fix

...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

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

src/site/resources/browserconfig.xml

src/site/resources/images/teetime.pptx

...java/teetime/stage/basic/distributor/DistributorTest.java

...est/java/teetime/stage/basic/merger/MergerSignalTest.java

src/test/java/teetime/stage/basic/merger/MergerTest.java