interfaces References and Reference
Merge branch 'master' into 514
#514 RtReferences + RtReference and unit tests
RtReferencesITCase
#514 fixes to RtReferenceTest
Merge branch 'master' into 514
#514 Mocks for References and Reference + tests
Merge branch 'master' into 514
Merge branch 'master' into 514
Merge pull request #59 from jcabi/master

merge to my repo
Issue #547 - Method RtDeployKeys#remove(int number) is redundant
#514 fixes to RtReferencesITCase
Merge branch 'master' into 514
#514 fixes to RtReferencesITCase
Merge pull request #572 from lthuangiang/547

#572: pull request  Issue #547 - Method RtDeployKeys#remove(int number) is redundant
Merge pull request #556 from amihaiemil/514

#556: pull request Pull request for #514