Added implementation of RatingChange
Added implementation of JudgeProtocol
Added implementation of Hack
Added implementation of ProblemResult
Renamed ProblemResults to ProblemResult
Added implementation of RanklistRow
Added implementation of 'contest.hacks' method
Merge branch 'dev' into examples
Added example (load hacks for contest by it's id)
Added implementation of contest.status method
Merge branch 'dev' into examples
Added example (load submissions for contest by it's id)
Fixed verdict field (it may be absent)
Added implementation for problemset.recentStatus method
Merge branch 'dev' into examples
Added example (load N last submissions)
Added implementation of user.rating method
Merge branch 'dev' into examples
Added example (load user rating history by it's handle)
Refactoring: improved implementation of contest.standings method.

Split one kwargs parameter into separate parameters
Added asserts
This function returns list of RanklistRow now as part of dictionary
Improved doc comment