Issue 748: initial commit
Issue 461: initial commit
Issue 461: code review changes
Issue 461: code review changes(checkstyle)
Merge pull request #755 from sanai56967/748

#755: pull request Issue 748: initial commit
#master: build matrix
polished
#master: polished for parent 1.6.1
#master: fix for jdk6
Merge pull request #756 from sanai56967/461

#756: pull request Issue 461: initial commit
Merge pull request #79 from jcabi/master

merge to my repo