initial model for prices, currencies, securities and exchanges

[invisig0th]

No description provided.

[codecov]

Codecov Report

Merging #1820 into master will decrease coverage by 11.07%.
The diff coverage is 99.08%.

@@             Coverage Diff             @@
##           master    #1820       +/-   ##
===========================================
- Coverage   96.12%   85.04%   -11.08%     
===========================================
  Files         139      139               
  Lines       27140    27249      +109     
===========================================
- Hits        26089    23175     -2914     
- Misses       1051     4074     +3023     

Flag	Coverage Δ
#linux	85.04% <99.08%> (-11.08%)	⬇️
#linux_replay	64.27% <43.11%> (-2.15%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
synapse/lib/types.py	81.68% <98.21%> (-15.89%)	⬇️
synapse/common.py	85.53% <100.00%> (-10.89%)	⬇️
synapse/datamodel.py	93.88% <100.00%> (-0.70%)	⬇️
synapse/lib/layer.py	93.22% <100.00%> (-4.55%)	⬇️
synapse/models/economic.py	100.00% <100.00%> (ø)
synapse/lib/ratelimit.py	0.00% <0.00%> (-100.00%)	⬇️
synapse/lib/crypto/ecc.py	0.00% <0.00%> (-100.00%)	⬇️
synapse/tools/easycert.py	0.00% <0.00%> (-100.00%)	⬇️
synapse/tools/json2mpk.py	0.00% <0.00%> (-100.00%)	⬇️
synapse/lib/storm_format.py	0.00% <0.00%> (-100.00%)	⬇️
... and 47 more

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