Problem (Fix #1308): unnecessary item wrappers for merkle trie storage

[yihuang]

Solution:

• Do the switch to jellyfish merkle library.

[tomtau]

bors try

[tomtau]

for historical reasons, chain-abci aggregated some unused dependencies -- it still contains starling: https://github.com/crypto-com/chain/blob/master/chain-abci/Cargo.toml#L28 so can be removed ?

[yihuang]

for historical reasons, chain-abci aggregated some unused dependencies -- it still contains starling: https://github.com/crypto-com/chain/blob/master/chain-abci/Cargo.toml#L28 so can be removed ?

Done

[bors]

try

Build failed:

• continuous-integration/travis-ci/push

[tomtau]

bors r+

[codecov]

Codecov Report

Merging #1428 into master will decrease coverage by 0.51%.
The diff coverage is 98.38%.

@@            Coverage Diff             @@
##           master    #1428      +/-   ##
==========================================
- Coverage   64.42%   63.90%   -0.52%     
==========================================
  Files         161      159       -2     
  Lines       21647    21143     -504     
==========================================
- Hits        13946    13512     -434     
+ Misses       7701     7631      -70     

Impacted Files	Coverage Δ
chain-abci/src/main.rs	0.00% <ø> (ø)
chain-abci/src/storage/mod.rs	87.85% <ø> (+1.55%)	⬆️
chain-abci/src/app/query.rs	61.59% <80.00%> (+1.01%)	⬆️
chain-abci/src/app/app_init.rs	77.57% <81.81%> (+1.82%)	⬆️
chain-abci/src/app/commit.rs	95.08% <100.00%> (+0.16%)	⬆️
chain-abci/src/app/end_block.rs	100.00% <100.00%> (ø)
chain-abci/src/app/macros.rs	100.00% <100.00%> (ø)
chain-abci/src/app/mod.rs	82.10% <100.00%> (-0.10%)	⬇️
chain-abci/src/app/rewards.rs	98.27% <100.00%> (-0.02%)	⬇️
chain-abci/src/app/validate_tx.rs	83.09% <100.00%> (-0.24%)	⬇️
... and 13 more

[bors]

Build succeeded:

• continuous-integration/travis-ci/push
• drone-hw/push