Drop Scala 2.11 and update dependencies

[coveralls]

Pull Request Test Coverage Report for Build 36

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 18.772%

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Totals
Change from base Build 30:	0.0%
Covered Lines:	162
Relevant Lines:	863

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💛 - Coveralls