Further modularization

[NeoTheThird]

Last one for this round :)

[codecov-io]

Codecov Report

Merging #1567 (11a3ecb) into master (4fc475e) will increase coverage by 10.26%.
The diff coverage is 45.93%.

@@             Coverage Diff             @@
##           master    #1567       +/-   ##
===========================================
+ Coverage   29.28%   39.54%   +10.26%     
===========================================
  Files          14       17        +3     
  Lines         642      665       +23     
===========================================
+ Hits          188      263       +75     
+ Misses        454      402       -52     

Impacted Files	Coverage Δ
src/devices.js	5.28% <1.26%> (+0.41%)	⬆️
src/lib/mainEvent.js	27.72% <27.72%> (ø)
src/lib/errors.js	47.36% <44.44%> (+1.91%)	⬆️
src/lib/system-image.js	19.44% <50.00%> (+2.30%)	⬆️
src/main.js	36.92% <50.00%> (+11.92%)	⬆️
src/lib/cli.js	71.42% <60.00%> (-28.58%)	⬇️
src/lib/reporter.js	94.73% <94.73%> (ø)
src/lib/cache.js	66.66% <100.00%> (+12.12%)	⬆️
src/lib/deviceTools.js	57.89% <100.00%> (+2.33%)	⬆️
src/lib/log.js	100.00% <100.00%> (ø)
... and 9 more

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[NeoTheThird]

Still looking a bit messy, but we're getting there!