Use object wrapper for fetcher association. Fixes #87.
Merge pull request #88 from Haneke/bug/uikit/deinit-crash

Use object wrapper for fetcher association. Fixes #87.
Merge pull request #89 from Haneke/feature/prettifying/convenience-fetch

Convenience fetch functions
Use Succeeder as type
Merge pull request #90 from Haneke/feature/prettifying/chainable-fetch

Chainable fetch
Merge branch 'master' into feature/prettifying/swift-like-names