feat(cli): cancel gov proposal by proposer before voting period ends

CHANGELOG.md

@@ -56,6 +56,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/auth) [#13210](https://github.com/cosmos/cosmos-sdk/pull/13210) Add `Query/AccountInfo` endpoint for simplified access to basic account info.
 * (cli) [#13147](https://github.com/cosmos/cosmos-sdk/pull/13147) Add the `--append` flag to the `sign-batch` CLI cmd to combine the messages and sign those txs which are created with `--generate-only`.
 * (x/consensus) [#12905](https://github.com/cosmos/cosmos-sdk/pull/12905) Create a new `x/consensus` module that is now responsible for maintaining Tendermint consensus parameters instead of `x/param`. Legacy types remain in order to facilitate parameter migration from the deprecated `x/params`. App developers should ensure that they execute `baseapp.MigrateParams` during their chain upgrade. These legacy types will be removed in a future release.
+* (x/gov) [#13010](https://github.com/cosmos/cosmos-sdk/pull/13010) Add `cancel-proposal` feature to proposals. Now proposers can cancel the proposal prior to the proposal's voting period end time.
 * (cli) [#13454](https://github.com/cosmos/cosmos-sdk/pull/13454) `sign-batch` CLI can now read multiple transaction files.
 
 ### Improvements
@@ -105,6 +106,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/gov) [#12771](https://github.com/cosmos/cosmos-sdk/pull/12771) Initial deposit requirement for proposals at submission time.
 * (x/staking) [#12967](https://github.com/cosmos/cosmos-sdk/pull/12967) `unbond` now creates only one unbonding delegation entry when multiple unbondings exist at a single height (e.g. through multiple messages in a transaction).
 * (x/auth/vesting) [#13502](https://github.com/cosmos/cosmos-sdk/pull/13502) Add Amino Msg registration for `MsgCreatePeriodicVestingAccount`.
+* (x/gov) [#13010](https://github.com/cosmos/cosmos-sdk/pull/13010) `submit-proposal` gov cli tx adds `proposer` field to proposal.
+
 
 ### API Breaking Changes
 

UPGRADING.md

@@ -94,6 +94,42 @@ By default, the new `MinInitialDepositRatio` parameter is set to zero during mig
 feature is disabled. If chains wish to utilize the minimum proposal deposits at time of submission, the migration logic needs to be 
 modified to set the new parameter to the desired value.
 
+##### Proposer field to Proposal
+
+The `Proposal` state has been updated with proposer field. For proposal state migraton
+developers should ensure to call `v4.AddProposerAddressToProposal` in their upgrade handler.
+
+```go
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/cosmos/cosmos-sdk/types/module"
+	v4 "github.com/cosmos/cosmos-sdk/x/gov/migrations/v4"
+	upgradetypes "github.com/cosmos/cosmos-sdk/x/upgrade/types"
+)
+
+func (app SimApp) RegisterUpgradeHandlers() {
+	app.UpgradeKeeper.SetUpgradeHandler(UpgradeName,
+		func(ctx sdk.Context, plan upgradetypes.Plan, fromVM module.VersionMap) (module.VersionMap, error) {
+			// add proposal ids with proposers
+			proposals := make(map[uint64]string)
+			// proposals[1] = "cosmos1luyncewxk4lm24k6gqy8y5dxkj0klr4tu0lmnj" ...
+			v4.AddProposerAddressToProposal(ctx, sdk.NewKVStoreKey(v4.ModuleName), app.appCodec, proposals)
+			return app.ModuleManager.RunMigrations(ctx, app.Configurator(), fromVM)
+		})
+}
+
+```
+
+##### Proposal Cancel Burn Rate Param
+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 burned or sent to community pool. The deposits burn rate will be determined by a new parameter called `ProposalCancelBurnRate` parameter.
+
+```
+	1. deposits * proposal_cancel_burn_rate will be burned
+	2. deposits * (1 - proposal_cancel_burn_rate) will be sent to community pool
+```
+
+By default, the new `ProposalCancelBurnRate` parameter is set to zero during migration. 
+
 #### `x/consensus`
 
 Introducing a new `x/consensus` module to handle managing Tendermint consensus