feat(Build): Expose ACIHelpers and ACITransformation to bundle

[nduchak]

Update node to 5.5.2

[codecov]

Codecov Report

Merging #970 into develop will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##           develop     #970      +/-   ##
===========================================
+ Coverage    92.78%   92.82%   +0.03%     
===========================================
  Files           58       58              
  Lines         3076     3078       +2     
===========================================
+ Hits          2854     2857       +3     
+ Misses         222      221       -1     

Impacted Files	Coverage Δ
es/contract/aci/helpers.js	100.00% <100.00%> (ø)
es/contract/aci/transformation.js	95.18% <100.00%> (ø)
es/index.js	100.00% <100.00%> (ø)
es/channel/handlers.js	80.83% <0.00%> (+0.41%)	⬆️

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