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fix: recover simapp CHANGELOG.md
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# Changelog

`SimApp` is an application built using the Cosmos SDK for testing and educational purposes.
It won't be tagged or intended to be imported in an application.
This changelog is aimed to help developers understand the wiring changes between SDK versions.
It is an exhaustive list of changes that completes the SimApp section in the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#simapp)

## v0.50 to v0.52

Always refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md) to understand the changes.

* Update module path to new vanity url.
* Wire new SDK modules (`epochs`, `accounts`, `protocolpool`).
* Remove the crisis module from simapp.
* Update `export` function to make use of the new module collections API.
* Add example of how to define a custom mint function in `simapp/mint_fn.go`.
* Add address codec in client context and signing context.
* Update testnet command to match new module APIs.
* [#20409](https://github.com/cosmos/cosmos-sdk/pull/20409) Add `tx` as `SkipStoreKeys` in `app_config.go`.
* [#20485](https://github.com/cosmos/cosmos-sdk/pull/20485) The signature of `x/upgrade/types.UpgradeHandler` has changed to accept `appmodule.VersionMap` from `module.VersionMap`. These types are interchangeable, but usages of `UpradeKeeper.SetUpgradeHandler` may need to adjust their usages to match the new signature.
* [#20740](https://github.com/cosmos/cosmos-sdk/pull/20740) Update `genutilcli.Commands` to use the genutil modules from the module manager.
* [#20771](https://github.com/cosmos/cosmos-sdk/pull/20771) Use client/v2 `GetNodeHomeDirectory` helper in `app.go` and use the `DefaultNodeHome` constant everywhere in the app.
* [#20490](https://github.com/cosmos/cosmos-sdk/pull/20490) Refactor simulations to make use of `testutil/sims` instead of `runsims`.
* [#19726](https://github.com/cosmos/cosmos-sdk/pull/19726) Update APIs to match CometBFT v1.
* [#21466](https://github.com/cosmos/cosmos-sdk/pull/21466) Allow chains to plug in their own public key types in `base.Account`
* [#21508](https://github.com/cosmos/cosmos-sdk/pull/21508) Abstract the way we update the version of the app state in `app.go` using the interface `VersionModifier`.

<!-- TODO: move changelog.md elements to here -->

## v0.47 to v0.50

No changelog is provided for this migration. Please refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#v050x)

## v0.46 to v0.47

No changelog is provided for this migration. Please refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#v047x)

## v0.45 to v0.46

No changelog is provided for this migration. Please refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#v046x)

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