(docs):Add SetClientCtx instructions to migration guide (cosmos#481)

* fix annoying md lints

* add setclientctx instructions

w

* Auto-fix markdown lint issues

* improve the look of the comments

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: vladjdk

docs/migrations/v0.3.0_to_v0.4.0.md

@@ -80,6 +80,28 @@ sdkAppCreatorWrapper := func(l log.Logger, d dbm.DB, w io.Writer, ao servertypes
 + snapshot.Cmd(sdkAppCreatorWrapper),
 ```
 
+### 2.3 Add `clientCtx` and `SetClientCtx` to app.go
+
+Add the clientCtx to your app object.
+
+*(app/app.go)*
+
+```diff
+type MyApp struct {
+    ...
++   clientCtx client.Context
+    ...
+}
+```
+
+Add a setter in the file.
+
+```diff
++ func (app *EVMD) SetClientCtx(clientCtx client.Context) {
++    app.clientCtx = clientCtx
++ }
+```
+
 ---
 
 ## 3) Pending-tx listener support in the app (`app/app.go`)
@@ -112,7 +134,8 @@ Add a public method to register a listener by `txHash`:
 *(app/app.go)*
 
 ```go
-func (app *MyApp) RegisterPendingTxListener(listener func(common.Hash // from "github.com/ethereum/go-ethereum/common")) {
+// from "github.com/ethereum/go-ethereum/common")) {
+func (app *MyApp) RegisterPendingTxListener(listener func(common.Hash 
     app.pendingTxListeners = append(app.pendingTxListeners, listener)
 }
 ```
@@ -145,17 +168,31 @@ type Optionals struct {
 
 func defaultOptionals() Optionals {
     return Optionals{
-        AddressCodec:       addresscodec.NewBech32Codec // from addresscodec "github.com/cosmos/cosmos-sdk/codec/address"(sdk.GetConfig() // from sdk "github.com/cosmos/cosmos-sdk/types".GetBech32AccountAddrPrefix()),
-        ValidatorAddrCodec: addresscodec.NewBech32Codec // from addresscodec "github.com/cosmos/cosmos-sdk/codec/address"(sdk.GetConfig() // from sdk "github.com/cosmos/cosmos-sdk/types".GetBech32ValidatorAddrPrefix()),
-        ConsensusAddrCodec: addresscodec.NewBech32Codec // from addresscodec "github.com/cosmos/cosmos-sdk/codec/address"(sdk.GetConfig() // from sdk "github.com/cosmos/cosmos-sdk/types".GetBech32ConsensusAddrPrefix()),
+        // from addresscodec "github.com/cosmos/cosmos-sdk/codec/address"(sdk.GetConfig()
+		// from sdk "github.com/cosmos/cosmos-sdk/types".GetBech32AccountAddrPrefix()),
+        AddressCodec:       addresscodec.NewBech32Codec
+		// from addresscodec "github.com/cosmos/cosmos-sdk/codec/address"(sdk.GetConfig()
+		// from sdk "github.com/cosmos/cosmos-sdk/types".GetBech32ValidatorAddrPrefix()),
+        ValidatorAddrCodec: addresscodec.NewBech32Codec
+		// from addresscodec "github.com/cosmos/cosmos-sdk/codec/address"(sdk.GetConfig() 
+		// from sdk "github.com/cosmos/cosmos-sdk/types".GetBech32ConsensusAddrPrefix()),
+        ConsensusAddrCodec: addresscodec.NewBech32Codec
     }
 }
 
 type Option func(*Optionals)
 
-func WithAddressCodec(c address.Codec // from "cosmossdk.io/core/address") Option       { return func(o *Optionals){ o.AddressCodec = c } }
-func WithValidatorAddrCodec(c address.Codec // from "cosmossdk.io/core/address") Option { return func(o *Optionals){ o.ValidatorAddrCodec = c } }
-func WithConsensusAddrCodec(c address.Codec // from "cosmossdk.io/core/address") Option { return func(o *Optionals){ o.ConsensusAddrCodec = c } }
+// from "cosmossdk.io/core/address") 
+// Option { return func(o *Optionals){ o.AddressCodec = c } }
+func WithAddressCodec(c address.Codec 
+
+// from "cosmossdk.io/core/address") 
+// Option { return func(o *Optionals){ o.ValidatorAddrCodec = c } }
+func WithValidatorAddrCodec(c address.Codec 
+
+// from "cosmossdk.io/core/address") 
+// Option { return func(o *Optionals){ o.ConsensusAddrCodec = c } }
+func WithConsensusAddrCodec(c address.Codec 
 ```
 
 ### 4.3 Update the precompile factory to accept options
@@ -195,8 +232,10 @@ func WithConsensusAddrCodec(c address.Codec // from "cosmossdk.io/core/address")
 *(app/keepers/precompiles.go)*
 
 ```diff
-- govPrecompile, err := govprecompile.NewPrecompile // from govprecompile "github.com/cosmos/evm/precompiles/gov"(govKeeper, cdc)
-+ govPrecompile, err := govprecompile.NewPrecompile // from govprecompile "github.com/cosmos/evm/precompiles/gov"(govKeeper, cdc, options.AddressCodec)
+- govPrecompile, err := govprecompile.NewPrecompile 
+-     // from govprecompile "github.com/cosmos/evm/precompiles/gov"(govKeeper, cdc)
++ govPrecompile, err := govprecompile.NewPrecompile 
++     // from govprecompile "github.com/cosmos/evm/precompiles/gov"(govKeeper, cdc, options.AddressCodec)
 ```
 
 ---

tests/jsonrpc/README.md

@@ -123,4 +123,4 @@ The scripts use the following defaults:
 
 - Verify the container is running: `docker ps | grep evmd-jsonrpc-test`
 - Check if ports are bound: `docker port evmd-jsonrpc-test`
-- Test with curl: `curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}' http://localhost:8545`
+- Test with curl: `curl -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}' http://localhost:8545`