Eth1 events db tracking

[mpetrunic]

I will open another PR with fetching of past events from logs.

[codecov]

Codecov Report

Merging #180 into master will decrease coverage by 20.94%.
The diff coverage is 30.43%.

@@             Coverage Diff             @@
##           master     #180       +/-   ##
===========================================
- Coverage   52.79%   31.85%   -20.95%     
===========================================
  Files          85       46       -39     
  Lines        1305      744      -561     
  Branches      123       64       -59     
===========================================
- Hits          689      237      -452     
+ Misses        590      507       -83     
+ Partials       26        0       -26

[wemeetagain]

Looks good!

As an aside, I think we will need to also store post-genesis deposits in some fashion, so that our validators can add the deposits properly on block proposal. https://github.com/ethereum/eth2.0-specs/blob/dev/specs/validator/0_beacon-chain-validator.md#deposits

[mpetrunic]

As an aside, I think we will need to also store post-genesis deposits in some fashion, so that our validators can add the deposits properly on block proposal. https://github.com/ethereum/eth2.0-specs/blob/dev/specs/validator/0_beacon-chain-validator.md#deposits

I put some comments in code about that, after Eth2Genesis event, per Eth2.0 specs, deposits should be stored in BlockBody during process block operation

accident

new updates

[mpetrunic]

@ChainSafe/sharding-core can we merge this? I have another one related to this ready :)