Merge pull request #205 from Tereci/master

Updating process.rb to enable deploying and redeploying ZIP archives and...
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Merge pull request #208 from korczis/master

Bump version
Extracted root_key mixin
GoodData::MdObject is composed from mixins
Fix typo
Remove redundant Mixin appendix
Not exportable mixin ..
Fix typo
More modular MdObject
Fix cop issues
More modular MdObject
Fix tests
Fix rubocop issues
Fix IsFact mixin
Use mixins for GoodData::Project & GoodData::ProjectRole to show how it helps
Compactness
ContentPropertyReader and ContentPropertyWriter mixins
More compact helpers
Invoke changes