Fix network interface selection and bump version

[JamesWrigley]

Fixes #28.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.02%. Comparing base (ee6e544) to head (bc421f5).
⚠️ Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #29      +/-   ##
==========================================
- Coverage   88.12%   88.02%   -0.10%     
==========================================
  Files          11       11              
  Lines        2096     2096              
==========================================
- Hits         1847     1845       -2     
- Misses        249      251       +2     

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[ufechner7]

Looks better:

julia> using DistributedNext

julia> addprocs(1)
1-element Vector{Int64}:
 2

Thank you!

Much faster than Distributed, only 1.5s instead of 2.5s.