fix: clear up side vote addrs #964
Merged
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Description
clear up all vote addrs when the height of new hardfork reached
Rationale
a part of solving rogue key attack
refer to bnb-chain/bnc-cosmos-sdk#353
Example
Changes
PS: change github.com/tendermint/crypto to new created github.com/bnb-chain/tendermint-crypto
github.com/bnb-chain/tendermint-crypto is based on golang.org/x/crypto@v0.5.0 which others mod needed