Problem: two emergency bug fixes not included

Solution:
- cherry picked two bug fix:
 - [iterator on deeply nested cache contexts is extremely slow ](evmos/ethermint#617)
 - [tx log attribtue value not parsable by some client ](evmos/ethermint#615)

CHANGELOG.md

@@ -7,6 +7,8 @@
 - [cronos#109](https://github.com/crypto-org-chain/cronos/issues/109) ibc transfer timeout too short
 - [tharsis#590](https://github.com/tharsis/ethermint/pull/590) fix export contract state in genesis and reimport
 - [cronos#123](https://github.com/crypto-org-chain/cronos/issues/123) fix ibc refund logic
+- [tharsis#617](https://github.com/tharsis/ethermint/pull/617) iterator on deeply nested cache contexts is extremely slow
+- [tharsis#615](https://github.com/tharsis/ethermint/pull/615) tx log attribtue value not parsable by some client
 
 ### Features
 

go.mod

@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	github.com/armon/go-metrics v0.3.9
-	github.com/cosmos/cosmos-sdk v0.44.0
+	github.com/cosmos/cosmos-sdk v0.44.1
 	github.com/cosmos/ibc-go v1.2.0
 	github.com/ethereum/go-ethereum v1.10.3
 	github.com/gogo/protobuf v1.3.3
@@ -36,6 +36,10 @@ replace github.com/99designs/keyring => github.com/crypto-org-chain/keyring v1.1
 replace github.com/cosmos/ibc-go => github.com/crypto-org-chain/ibc-go v1.0.1-hooks
 
 // FIXME: update after PR merged: https://github.com/PeggyJV/gravity-bridge/pull/182
-replace github.com/peggyjv/gravity-bridge/module => github.com/crypto-org-chain/gravity-bridge/module v0.1.22-0.20210923075944-630e7235f4b2
+// https://github.com/crypto-org-chain/gravity-bridge/tree/cronos
+replace github.com/peggyjv/gravity-bridge/module => github.com/crypto-org-chain/gravity-bridge/module v0.1.22-0.20211004080324-36ed315b3281
 
 replace github.com/cosmos/iavl => github.com/cosmos/iavl v0.17.1
+
+// FIXME: https://github.com/crypto-org-chain/ethermint/tree/cronos2
+replace github.com/tharsis/ethermint => github.com/crypto-org-chain/ethermint v0.4.2-0.20211004101819-7b5449f36cc8