[WIP] state and treedb

[anarcher]

Background

https://github.com/bosnet/sebak/pull/277/files#diff-6c89e286be7a25c3243bc418dde88787R3

Solution

Possible Drawbacks

[codecov-io]

Codecov Report

Merging #277 into master will decrease coverage by 0.78%.
The diff coverage is 22.78%.

@@            Coverage Diff             @@
##           master     #277      +/-   ##
==========================================
- Coverage   64.42%   63.63%   -0.79%     
==========================================
  Files          65       68       +3     
  Lines        4104     4183      +79     
==========================================
+ Hits         2644     2662      +18     
- Misses       1150     1208      +58     
- Partials      310      313       +3

Flag	Coverage Δ
#integration_tests	46.15% <ø> (ø)	⬆️
#unittests	57.79% <22.78%> (-0.77%)	⬇️

Impacted Files	Coverage Δ
lib/state/tree/eth/loader.go	0% <0%> (ø)
lib/state/tree/eth/trie.go	50% <50%> (ø)
lib/state/tree/eth/db.go	8.57% <8.57%> (ø)

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[anarcher]

I close it, If it needs itself, I will reopen it. :->

[kfangw]

statedb is back ~ 👍