Delete the app interface (#1665)

* Delete the app interface

* Changelog update

* Use write type interface

CHANGELOG.md

@@ -42,10 +42,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Breaking Changes
+
+#### golang API breaks
+
+* [#1665](https://github.com/osmosis-labs/osmosis/pull/1665) Delete app/App interface
+* [#1630](https://github.com/osmosis-labs/osmosis/pull/1630) Delete the v043_temp module, now that we're on an updated SDK version.
+
+
+### Features
+
 * [#1312] Stableswap: Createpool logic 
 * [#1230] Stableswap CFMM equations
 * [#1429] solver for multi-asset CFMM
-* [#1630](https://github.com/osmosis-labs/osmosis/pull/1630) Delete the v043_temp module, now that we're on an updated SDK version.
 
 ## [v9.0.0 - Nitrogen](https://github.com/osmosis-labs/osmosis/releases/tag/v9.0.0)
 

app/app.go

@@ -28,6 +28,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/server/api"
 	"github.com/cosmos/cosmos-sdk/server/config"
 	servertypes "github.com/cosmos/cosmos-sdk/server/types"
+	sdksimapp "github.com/cosmos/cosmos-sdk/simapp"
 	"github.com/cosmos/cosmos-sdk/testutil/testdata"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
@@ -83,7 +84,7 @@ var (
 	// EmptyWasmOpts defines a type alias for a list of wasm options.
 	EmptyWasmOpts []wasm.Option
 
-	_ App = (*OsmosisApp)(nil)
+	_ sdksimapp.App = (*OsmosisApp)(nil)
 
 	Upgrades = []upgrades.Upgrade{v4.Upgrade, v5.Upgrade, v7.Upgrade, v9.Upgrade}
 	Forks    = []upgrades.Fork{v3.Fork, v6.Fork, v8.Fork}