chore: Add v0.2.1 upgrade handler (#284)

* add 0.2.1 upgrade handler

* lint'

app/upgrades.go

@@ -31,6 +31,7 @@ func (app App) RegisterUpgradeHandlers() {
 
 	app.registerUpgrade0_1_4(upgradeInfo)
 	app.registerUpgrade0_2_0(upgradeInfo)
+	app.registerUpgrade0_2_1(upgradeInfo)
 }
 
 // performs upgrade from v0.1.3 to v0.1.4
@@ -106,6 +107,16 @@ func (app *App) registerUpgrade0_2_0(upgradeInfo upgradetypes.Plan) {
 	})
 }
 
+func (app *App) registerUpgrade0_2_1(_ upgradetypes.Plan) {
+	const planName = "v0.2.1"
+	app.UpgradeKeeper.SetUpgradeHandler(planName,
+		func(ctx sdk.Context, plan upgradetypes.Plan, fromVM module.VersionMap) (module.VersionMap, error) {
+			ctx.Logger().Info("Upgrade handler execution", "name", planName)
+			return app.mm.RunMigrations(ctx, app.configurator, fromVM)
+		},
+	)
+}
+
 // helper function to check if the store loader should be upgraded
 func (app *App) storeUpgrade(planName string, ui upgradetypes.Plan, stores storetypes.StoreUpgrades) {
 	if ui.Name == planName && !app.UpgradeKeeper.IsSkipHeight(ui.Height) {