Add loggers

[nodech]

No description provided.

[codecov-io]

Codecov Report

Merging #41 into master will increase coverage by 0.21%.
The diff coverage is 79.68%.

@@            Coverage Diff             @@
##           master      #41      +/-   ##
==========================================
+ Coverage   75.06%   75.28%   +0.21%     
==========================================
  Files          17       17              
  Lines        1484     1509      +25     
==========================================
+ Hits         1114     1136      +22     
- Misses        370      373       +3

Impacted Files	Coverage Δ
lib/devices/ledgerhid.js	0% <0%> (ø)	⬆️
lib/txstate.js	95.48% <100%> (+0.25%)	⬆️
lib/bcoin.js	75.28% <76.66%> (-2.28%)	⬇️
lib/ledger.js	89.31% <95.45%> (+0.23%)	⬆️

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