DAO-240: add multichain currency support

[codecov[bot]]

Codecov Report

Merging #120 (abfdbf2) into master (e025951) will increase coverage by 1.58%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #120      +/-   ##
==========================================
+ Coverage   90.60%   92.19%   +1.58%     
==========================================
  Files          36       37       +1     
  Lines         660      756      +96     
==========================================
+ Hits          598      697      +99     
+ Misses         62       59       -3     

Impacted Files	Coverage Δ
src/index.js	100.00% <ø> (ø)
src/data/enzyme/knownFunctions.js	100.00% <100.00%> (ø)
src/data/index.js	100.00% <100.00%> (ø)
src/defaults.js	100.00% <100.00%> (ø)
src/evaluator/index.js	94.47% <100.00%> (+4.03%)	:arrow_up:
src/helpers/lib/token.js	100.00% <100.00%> (ø)
src/helpers/tokenAmount.js	100.00% <100.00%> (ø)
src/helpers/lib/methodRegistry.js	93.54% <0.00%> (-1.46%)	:arrow_down:
src/helpers/fromHex.js	100.00% <0.00%> (ø)
src/helpers/radspec.js	100.00% <0.00%> (ø)
... and 9 more

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