#4 typo in documentation
fixes #4: Repeater reports total waiting time
Merge pull request #5 from yegor256/4

#5: pull request #4: Repeater reports total waiting time
#2 logged waiting for termination
#2 added multiple shutdownNow attempts
#2 fixes after review
#2 fixes after review
Merge pull request #7 from krzyk/2

#7: pull request #2 logged waiting for termination