Update Gradle to 4.4.1

[vanniktech]

No description provided.

[codecov]

Codecov Report

Merging #75 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #75   +/-   ##
=========================================
  Coverage     55.81%   55.81%           
  Complexity       10       10           
=========================================
  Files             3        3           
  Lines            43       43           
  Branches          3        3           
=========================================
  Hits             24       24           
  Misses           15       15           
  Partials          4        4

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