Co-authored-by: JamesRay <66258875@qq.com>

making it possible to change app version via EndBlock

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Closes #4549

Closes #1007

## Description

This PR removes simple prefix from all types in the crypto/merkle directory.

The two proto types `Proof` & `ProofOp` have been moved to the `proto/crypto/merkle` directory.

proto messge `Proof` was renamed to `ProofOps` and `SimpleProof` message to `Proof`. 

Closes: #2755

LastCommitRound should always be >= 0 for heights > 1.

In State.updateToState, last precommit is computed  only when round
greater than -1 and has votes. But "LastCommit" is always updated
regardless of the condition. If there's no last precommit, "LastCommit"
is set to (*types.VoteSet)(nil). That's why "LastCommit" can be -1 for
heights > 1.

To fix it, only update State.RoundState.LastCommit when there is last
precommit.

Fixes #2737

Co-authored-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>

## Description

deprecation & removal of multisig. This key was only used in the sdk and now it has been added there

Closes: #4715 
Closes: #2163

## Description

migration of evidence reactor to proto

Closes: #XXX

Closes #4763

* check for Error after for loop ends

so we don't silently ignore errors, which would lead to clients getting
incomplete results

Refs https://github.com/tendermint/tendermint/pull/4979/files#r436511572

## Description

migration of blockchain reactors to protobuf

Closes: #XXX

Uses new JSON encoder in #4955 for all JSON. Branched off of #4968.

Closes #4681

## Description

migrate p2p/pex to protobuf

Closes: #XXX

## Description

migrate store to protobuf

Closes: #XXX

See: https://github.com/tendermint/tendermint/pull/4969#pullrequestreview-425298225

## Description

Add json tags to duplicate evidence 

Closes: #4958

run a validate basic on inbound validator sets and headers before further processing them

* rpc/core: return an error if `page=0`

Closes #4942

affected endpoints:

- /validators
- /tx_search

* swagger: update doc for /unconfirmed_txs

Closes: #4578

Co-authored-by: Anton Kaliaev <anton.kalyaev@gmail.com>

This PR removes lite & renames lite2 to light throughout the repo

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

Closes: #4944

## Description



Closes: #XXX

Closes #4801

* lite2: check header w/ witnesses only when doing bisection

Closes #4872

We don't need to check witnesses if we're doing backwards hash chain
verification. I also think we don't need to do it when sequential
verification is being used.

* lite2: require 1 witness only when verificationMode=skipping

https://github.com/tendermint/tendermint/pull/4929#pullrequestreview-423256477

we don't need witnesses when performing sequential verification (except
when primary fails)

## Description

- remove keyname suffix from keys


Closes: #2228

* proto: move mempool to proto

- changes according to moving the mempool reactor to proto

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

Closes: #2883

Ethermint currently has to maintain a map height-> block hash on the store (see here) as it needs to expose the eth_getBlockByHash JSON-RPC query for Web3 compatibility. This query is currently not supported by the tendermint RPC client.

Final step of a point release.

## Description

in consensus/state.go, when calulating metrics, retrieve address (ergo, pubkey) once prior to iterating over validatorset to ensure we do not make excessive calls to signer.

Partially closes: #4865

## Description

In https://github.com/tendermint/tendermint/pull/4466 a new type was created (EventAttribute) that replaced KV.Pair. This made the type Pair deadcode, this pr removes that type.

I don't think a changelog entry is needed since it is not being used anymore. But will add a section to the upgrading.md to let users know that it was replaced

Closes: #XXX

Closes #4846 
Spec https://github.com/tendermint/spec/pull/96

in /validators, /consensus_params and /status

Closes #3161

prevent proposer from proposing duplicate pieces of evidence

Closes https://github.com/tendermint/tendermint/issues/3857

Moves `lib/` folder to `jsonrpc/`.

Renames:

**packages**

`rpc` package -> `jsonrpc` package
`rpcclient` package -> `client` package
`rpcserver` package -> `server` package

**structs and interfaces**

```
JSONRPCClient to Client
JSONRPCRequestBatch to RequestBatch
JSONRPCCaller to Caller
```

**functions**

```
StartHTTPServer to Serve
StartHTTPAndTLSServer to ServeTLS

rpc/jsonrpc/client: rename NewURIClient to NewURI

NewJSONRPCClient to New
NewJSONRPCClientWithHTTPClient to NewWithHTTPClient
NewWSClient to NewWS
```

**misc**

- unexpose `ResponseWriterWrapper`
- remove unused http_params.go

Closes #3433

## Description

bech32 is only used in the sdk. I moved Bech32 to the sdk and we can remove it here. Don't think this needs to go into a minor release

Closes: #XXX

returning an error

Closes #4707

The number of evidence that can be committed in a single block is capped by a new evidence parameter called MaxNum

Closes #2998

Spec PR: https://github.com/tendermint/spec/pull/94

allow ReapX and CheckTx functions to run in parallel, making it not possible to block certain proposers from creating a new block.

Closes: #2972

Fixes #4802. The Go HTTP server has a global panic handler for requests, so it was not as severe as first thought.

This fix can still panic, since we try to send a `500` response - if that happens, the Go HTTP server will terminate the connection. Otherwise, the client will get a 200 response, which we should avoid. I'm sort of torn on whether it's even necessary to include this fix, instead of just letting the HTTP server deal with it.