update to 0.4.2

[michaelkryukov]

• Fixes
• Added storage
• Back to wrappers

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have added tests to cover my changes.
• [x] I have read the CONTRIBUTING document.
• [x] All new and existing tests passed.

[coveralls]

Pull Request Test Coverage Report for Build 151

• 39 of 40 (97.5%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 93.886%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
kutana/controller_vk/vkwrappers.py	18	19	94.74%
<!--	Total:	39	40	97.5%	-->

Totals
Change from base Build 136:	0.2%
Covered Lines:	645
Relevant Lines:	687

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💛 - Coveralls