issue 506 fixed
added test for "raw" method
added puzzles for test and mock methods
changed stream assertion
remove ignore from RT hooks test, now that test is working. Tests performed with my github repository
Merge pull request #582 from ahmedxx/puzzle_551-2759c576

#582: pull request remove ignore from RT hooks test, now that test is working. Tests perfor...
Merge pull request #60 from jcabi/master

merge to my repo
merge with master
Issue #593 - fixed
Merge pull request #523 from svarovski/issue-506

#523: pull request issue 506 fixed
Merge pull request #594 from lthuangiang/593

#594: pull request Issue #593