feat!: upstream expedited proposals (cosmos#14720)

CHANGELOG.md

@@ -39,6 +39,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Features
 
+* (x/gov) [#14720](https://github.com/cosmos/cosmos-sdk/pull/14720) Upstream expedited proposals from Osmosis.
 * (x/auth) [#14650](https://github.com/cosmos/cosmos-sdk/pull/14650) Add Textual SignModeHandler. It is however **NOT** enabled by default, and should only be used for **TESTING** purposes until `SIGN_MODE_TEXTUAL` is fully released.
 * (cli) [#14655](https://github.com/cosmos/cosmos-sdk/pull/14655) Add a new command to list supported algos.
 * (x/crisis) [#14588](https://github.com/cosmos/cosmos-sdk/pull/14588) Use CacheContext() in AssertInvariants()
@@ -131,7 +132,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [#13794](https://github.com/cosmos/cosmos-sdk/pull/13794) `types/module.Manager` now supports the
 `cosmossdk.io/core/appmodule.AppModule` API via the new `NewManagerFromMap` constructor.
 * [#14019](https://github.com/cosmos/cosmos-sdk/issues/14019) Remove the interface casting to allow other implementations of a `CommitMultiStore`.
-* (x/gov) [#14390](https://github.com/cosmos/cosmos-sdk/pull/14390) Add title, proposer and summary to proposal struct
+* (x/gov) [#14390](https://github.com/cosmos/cosmos-sdk/pull/14390) Add title, proposer and summary to proposal struct.
 * (baseapp) [#14417](https://github.com/cosmos/cosmos-sdk/pull/14417) `SetStreamingService` accepts appOptions, AppCodec and Storekeys needed to set streamers.  
     * Store pacakge no longer has a dependency on baseapp. 
 * (store) [#14438](https://github.com/cosmos/cosmos-sdk/pull/14438)  Pass logger from baseapp to store. 
@@ -170,6 +171,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### API Breaking Changes
 
+* (x/gov) [#14720](https://github.com/cosmos/cosmos-sdk/pull/14720) Add an expedited field in the gov v1 proposal and `MsgNewMsgProposal`.
 * [#14847](https://github.com/cosmos/cosmos-sdk/pull/14847) App and ModuleManager methods `InitGenesis`, `ExportGenesis`, `BeginBlock` and `EndBlock` now also return an error.
 * (simulation) [#14728](https://github.com/cosmos/cosmos-sdk/pull/14728) Rename the `ParamChanges` field to `LegacyParamChange` and `Contents` to `LegacyProposalContents` in `simulation.SimulationState`. Additionally it adds a `ProposalMsgs` field to `simulation.SimulationState`.
 * (x/upgrade) [#14764](https://github.com/cosmos/cosmos-sdk/pull/14764) The `x/upgrade` module is extracted to have a separate go.mod file which allows it to be a standalone module. 

UPGRADING.md

@@ -57,6 +57,10 @@ This is no longer the case, the assertion has been loosened to only require modu
 
 #### `x/gov`
 
+##### Expedited Proposals
+
+The `gov` v1 module has been updated to support the ability to expedite governance proposals. When a proposal is expedited, the voting period will be shortened to `ExpeditedVotingPeriod` parameter. An expedited proposal must have an higher voting threshold than a classic proposal, that threshold is defined with the `ExpeditedThreshold` parameter.
+
 ##### Cancelling Proposals
 
 The `gov` module has been updated to support the ability to cancel governance proposals. When a proposal is canceled, all the deposits of the proposal are either burnt or sent to `ProposalCancelDest` address. The deposits burn rate will be determined by a new parameter called `ProposalCancelRatio` parameter.