add Random to test deps

[KristofferC]

No description provided.

[Jutho]

Thanks.

[codecov]

Codecov Report

Merging #5 into master will decrease coverage by 0.16%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master       #5      +/-   ##
==========================================
- Coverage   80.94%   80.78%   -0.17%     
==========================================
  Files           7        7              
  Lines         614      614              
==========================================
- Hits          497      496       -1     
- Misses        117      118       +1

Impacted Files	Coverage Δ
src/broadcast.jl	66% <0%> (-2%)	⬇️

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[coveralls]

Coverage decreased (-0.07%) to 78.435% when pulling 76eb149 on KristofferC:master into 0fa5348 on Jutho:master.