Partial fix for #5291.

This adds a basic set of test cases for core network invariants. Although small, it is sufficient to replace and extend the current set of P2P tests. Further test cases can be added later.

I forgot to add the date when we cut 0.33.5. This fixes that. It also fixes a header indentation issue for 0.33.8.

Partial fix for #5291. For details, see [README.md](https://github.com/tendermint/tendermint/blob/erik/e2e-tests/test/e2e/README.md) and [RFC-001](https://github.com/tendermint/tendermint/blob/master/docs/rfc/rfc-001-end-to-end-testing.md).

This only includes a single test case under `test/e2e/tests/`, as a proof of concept - additional test cases will be submitted separately. A randomized testnet generator will also be submitted separately, there a currently just a handful of static testnets under `test/e2e/networks/`. This will eventually replace the current P2P tests and run in CI.

Fixes #5371.

Required for #5291, to generate configuration files with state sync RPC servers.

Required for #5291 to set timeouts for remote signers.

Closes https://github.com/tendermint/tendermint/issues/5425

previously, the second next could return nil, which would be the reason
for panic on line 275:

memTx := next.Value.(*mempoolTx)

Closes #5408

Closes #5339

Closes #2589

## Description

Add information on p2p settings in documentation 

Closes: #XXX

## Description

Add simple `NoBlockResponse` handling to blockchain reactor v1. I tested before and after with erik's e2e testing and was not able to reproduce the inability to sync after the changes were applied

Closes: #5394

* docs: fix /validators description

Refs https://github.com/tendermint/spec/pull/169

* consensus: remove nil err from logging statement

* update UPGRADING.md

* note about LightBlocks

This change adds some polish to the upgrading instructions for 0.34. The only substantive changes include:
* Calling out ABCI-impacting changes explicitly in the "ABCI Changes" section, even if those changes are also mentioned elsewhere
* Removes `ProofOfTrialPeriod` from consensus params; this change was introduced and then removed.

Reduces the state sync discovery time from 20 to 15 seconds, and makes it configurable.

This caused the node to crash whenever any state sync-related request was called via the ABCI UNIX socket client.

Bumps [vuepress-theme-cosmos](https://github.com/cosmos/vuepress-theme-cosmos) from 1.0.172 to 1.0.173.
- [Release notes](https://github.com/cosmos/vuepress-theme-cosmos/releases)
- [Commits](https://github.com/cosmos/vuepress-theme-cosmos/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tess Rinearson <tess.rinearson@gmail.com>

Cleans up the grammar, removes out-of-date information, and reduces false promises.

Clean up some inconsistent formatting and missing PR numbers.

Closes #625

also, document consensus parameters.
https://forum.cosmos.network/t/consensus-timeouts-explained/1421

Closes #4489

Fixes #5377 and comments in #4588 (review).

Closes #5145

also applies to light/client

## Description

Add a cmd to docker image and use it to format our proto files. This avoids developers the need to install clang-format

Closes: #XXX

found out this issue when trying to decouple mempool reactor with its
underlying clist implementation.

according to its comment, the test `TestReactorNoBroadcastToSender` is
intended to make sure that a peer shouldn't send tx back to its origin.
however, the current test forgot to init peer state key, thus the code
will get stuck at waiting for peer to catch up state *instead of* skipping
sending tx back:

b8d08b9ef4/mempool/reactor.go (L216-L226)

this PR fixes the issue by init peer state key.

evidence: modify evidence types (#5342)

light: detect light client attacks (#5344)

evidence: refactor evidence pool (#5345)

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

Revert the JSON-RPC/WebSocket response serialization format to the
standard way (i.e. a single RPC response per WebSocket text message) to
avoid breaking clients.

Serialization format changes will be discussed in an upcoming ADR.

Closes: #5373

[Rendered](https://github.com/tendermint/tendermint/blob/erik/adr-api-stability/docs/architecture/adr-059-go-api-stability.md)

Bumps [github.com/minio/highwayhash](https://github.com/minio/highwayhash) from 1.0.0 to 1.0.1.
- [Release notes](https://github.com/minio/highwayhash/releases)
- [Commits](https://github.com/minio/highwayhash/compare/v1.0.0...v1.0.1)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

## Description

Adding a section explaining the state store interface change. I wasn't aware this was used externally. Our infamous API strikes again.


<img width="462" alt="Screen Shot 2020-09-16 at 2 57 12 PM" src="https://user-images.githubusercontent.com/24299864/93342053-2835fe80-f82f-11ea-9296-9484c2931d9a.png">

Closes: #XXX

Fixes a couple of test data races. `testing.T` is not concurrency-safe and should not be used in goroutines at all.

Broke in #5356.

## Description

This PR adds support for badgerdb, rocksdb and boltdb within the build options. 

RocksDB builds correctly.

```
 make build TENDERMINT_BUILD_OPTIONS=rocksdb    
CGO_ENABLED=1 go build -mod=readonly -ldflags "-X github.com/tendermint/tendermint/version.GitCommit=`git rev-parse --short=8 HEAD` -s -w " -trimpath -tags 'tendermint rocksdb' -o build/tendermint ./cmd/tendermint/

tendermint on  master [$!] via 🐹 v1.15.2 took 19s 
```

Closes: #5355

Closes #5339

## Description

Make an interface for the state store. 

Closes: #5213

## Description

Hide the RFC section from the docs website. 

Closes: #XXX