feat: alias assetScale to currencyScale

[codecov-io]

Codecov Report

Merging #33 into master will decrease coverage by 0.08%. The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master      #33      +/-   ##
==========================================
- Coverage   77.11%   77.02%   -0.09%     
==========================================
  Files           3        3              
  Lines         367      370       +3     
==========================================
+ Hits          283      285       +2     
- Misses         84       85       +1

Impacted Files	Coverage Δ
index.js	76.79% <83.33%> (-0.11%)	:arrow_down:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 2879af7...1643033. Read the comment docs.

[sharafian]

yeah