## Description

- remove unused functions
- remove a function used in tests.

Closes: #XXX

Closes #6010

## Description

- removes blocktimeiota 
- merges block params in abci and core state
- spec change: https://github.com/tendermint/spec/pull/248


Closes: #5939

## Description

Separate protobuf and domain types. We should avoid using protobuf in our core logic. 

ref #5460

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

time_iota_ms is intended to ensure that an honest validator always generates timestamps 
with time increasing monotonically. For this purpose, it always suffices to have this parameter
set to `1ms`. Allowing users to choose different numbers increases bug surface area.
Thus the code now ignores the user provided time_iota_ms parameter (marking it as unused), 
and uses 1ms internally.

Remove unused ReadFile (unused) and
WriteFile (almost unused, alias of ioutil.WriteFile).

Add testcases for Must{Read,Write}File.

Secp256k1 was removed in the protobuf migration, this pr adds it back in order to provide this functionality for users (band)

Closes: #5495

Co-authored-by: Callum Waters <cmwaters19@gmail.com>

## Description

In protobuf `[]byte` is varint encoded. When adding txs to the block we were not taking this into account. 


Closes: #XXX

## Description

Closes: #5432

Closes #2589

evidence: modify evidence types (#5342)

light: detect light client attacks (#5344)

evidence: refactor evidence pool (#5345)

abci: application evidence prepared by evidence pool (#5354)

## Description

Check block protocol version in header validate basic. 

I tried searching for where we check the P2P protocol version but was unable to find it. When we check compatibility with a node we check we both have the same block protocol and are on the same network, but we do not check if we are on the same P2P protocol. It makes sense if there is a handshake change because we would not be able to establish a secure connection, but a p2p protocol version bump may be because of a p2p message change, which would go unnoticed until that message is sent over the wire.  Is this purposeful?

Closes: #4790

## Description

Work towards enabling errcheck

ref #5059

## Description

remove unneeded types 

![](https://media1.giphy.com/media/fSAyceY3BCgtiQGnJs/giphy.gif)

ref #5288

## Description

remove lunaticEvidence

## Description

Remove ConflictingHeaders & compositeEvidence types


Ref #5288

Fixes #5276.

## Description

This PR aims to make the crypto.PubKey interface more intuitive. 

Changes: 

- `VerfiyBytes` -> `VerifySignature`

Before `Bytes()` was amino encoded, now since it is the byte representation should we get rid of it entirely?

EDIT: decided to keep `Bytes()` as it is useful if you are using the interface instead of the concrete key

Closes: #XXX

Adds a genesis parameter `initial_height` which specifies the initial block height, as well as ABCI `RequestInitChain.InitialHeight` to pass it to the ABCI application, and `State.InitialHeight` to keep track of the initial height throughout the code. Fixes #2543, based on [RFC-002](https://github.com/tendermint/spec/pull/119). Spec changes in https://github.com/tendermint/spec/pull/135.

adds blockstore interface to evidence and adds fix to byzantine test

Fixes #5192.

@liamsi Can you verify that the test vectors match the Rust implementation? I updated `ProofsFromByteSlices()` as well, anything else that should be updated?

* fix usage of time in abci evidence

* update changelong and upgrading

* add test cases

See ADR 058

Closes #5113

Spec PR: https://github.com/tendermint/spec/pull/122

Solves #5138 in the way that if a validatorSet is nil or empty it will not try to transform it to protobug

Co-authored-by: Callum Michael Waters <cmwaters19@gmail.com>

Closes #2743

Refs #3732

ValidateBasic() for PotentialAmnesiaEvidence checks that the rounds of the two votes are different and does not check Vote Type

ValidateBasic() now also ensures that the first block is not a nil block (else the validator hasn't actually locked onto a block)

## Description

Validatebasic on FromProto for validator set not ToProto

Closes: #XXX