Closes #2998

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

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.6.2 to 1.6.3.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.6.2...v1.6.3)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.28.0 to 1.28.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.28.0...v1.28.1)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/tendermint/tm-db](https://github.com/tendermint/tm-db) from 0.5.0 to 0.5.1.
- [Release notes](https://github.com/tendermint/tm-db/releases)
- [Changelog](https://github.com/tendermint/tm-db/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tendermint/tm-db/compare/v0.5.0...v0.5.1)

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Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 0.0.6 to 0.0.7.
- [Release notes](https://github.com/spf13/cobra/releases)
- [Commits](https://github.com/spf13/cobra/compare/v0.0.6...0.0.7)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/gorilla/websocket](https://github.com/gorilla/websocket) from 1.4.1 to 1.4.2.
- [Release notes](https://github.com/gorilla/websocket/releases)
- [Commits](https://github.com/gorilla/websocket/compare/v1.4.1...v1.4.2)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.5.0 to 1.5.1.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.5.0...v1.5.1)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/golang/protobuf](https://github.com/golang/protobuf) from 1.3.4 to 1.3.5.
- [Release notes](https://github.com/golang/protobuf/releases)
- [Commits](https://github.com/golang/protobuf/compare/v1.3.4...v1.3.5)

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* deps: bump deps that bot cant

- bumping deps that dependat bot does not do.

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

* run go mod tidy

* fix go.sum

Bumps [github.com/tendermint/tm-db](https://github.com/tendermint/tm-db) from 0.4.1 to 0.5.0.
- [Release notes](https://github.com/tendermint/tm-db/releases)
- [Changelog](https://github.com/tendermint/tm-db/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tendermint/tm-db/compare/v0.4.1...v0.5.0)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.27.1 to 1.28.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.27.1...v1.28.0)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/Workiva/go-datastructures](https://github.com/Workiva/go-datastructures) from 1.0.51 to 1.0.52.
- [Release notes](https://github.com/Workiva/go-datastructures/releases)
- [Commits](https://github.com/Workiva/go-datastructures/compare/v1.0.51...v1.0.52)

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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.4.1...v1.5.0)

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Bumps [github.com/Workiva/go-datastructures](https://github.com/Workiva/go-datastructures) from 1.0.50 to 1.0.51.
- [Release notes](https://github.com/Workiva/go-datastructures/releases)
- [Commits](https://github.com/Workiva/go-datastructures/compare/v1.0.50...v1.0.51)

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Bumps [github.com/golang/protobuf](https://github.com/golang/protobuf) from 1.3.3 to 1.3.4.
- [Release notes](https://github.com/golang/protobuf/releases)
- [Commits](https://github.com/golang/protobuf/compare/v1.3.3...v1.3.4)

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Bumps [github.com/tendermint/tm-db](https://github.com/tendermint/tm-db) from 0.4.0 to 0.4.1.
- [Release notes](https://github.com/tendermint/tm-db/releases)
- [Changelog](https://github.com/tendermint/tm-db/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tendermint/tm-db/compare/v0.4.0...v0.4.1)

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

Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 0.0.3 to 0.0.6.
- [Release notes](https://github.com/spf13/cobra/releases)
- [Commits](https://github.com/spf13/cobra/compare/v0.0.3...v0.0.6)

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Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.5.0 to 1.5.1.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](https://github.com/stretchr/testify/compare/v1.5.0...v1.5.1)

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

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.4.0 to 1.5.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](https://github.com/stretchr/testify/compare/v1.4.0...v1.5.0)

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replaces #4434

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

* dep: bump gokitdep: bump gokitdep: bump gokitdep: bump gokitdep: bump gokitdep: bump gokitdep: bump gokitdep: bump gokitdep: bump gokit-

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

* go mod tidy

* test go version change

* combination of multiple cmds

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

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.27.0 to 1.27.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.27.0...v1.27.1)

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

Bumps [github.com/golang/protobuf](https://github.com/golang/protobuf) from 1.3.2 to 1.3.3.
- [Release notes](https://github.com/golang/protobuf/releases)
- [Commits](https://github.com/golang/protobuf/compare/v1.3.2...v1.3.3)

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Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.26.0 to 1.27.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.26.0...v1.27.0)

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Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.6.1 to 1.6.2.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.6.1...v1.6.2)

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Bumps [github.com/pkg/errors](https://github.com/pkg/errors) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/pkg/errors/releases)
- [Commits](https://github.com/pkg/errors/compare/v0.9.0...v0.9.1)

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* dep: update tm-db to 0.4.0

- update 0.4.0 as it is a breaking change and cannot be handled by depndabot

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

*  more work towards error handling

* error and emtpy bytes handling

* work on tests

* add changelog entry, change some error handling

* address some pr comments

* panic in a few more places

* move error higher up

* redo some error handling

* fix some bz == nil to len(bz) == 0

* change statebytes

Bumps [github.com/pkg/errors](https://github.com/pkg/errors) from 0.8.1 to 0.9.0.
- [Release notes](https://github.com/pkg/errors/releases)
- [Commits](https://github.com/pkg/errors/compare/v0.8.1...v0.9.0)

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

Bumps [github.com/go-logfmt/logfmt](https://github.com/go-logfmt/logfmt) from 0.4.0 to 0.5.0.
- [Release notes](https://github.com/go-logfmt/logfmt/releases)
- [Changelog](https://github.com/go-logfmt/logfmt/blob/master/CHANGELOG.md)
- [Commits](https://github.com/go-logfmt/logfmt/compare/v0.4.0...v0.5.0)

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* fix raw import sr25519

* add sr25519 to multisig codec

* bump go-schnorrkel

Co-authored-by: Marko <marbar3778@yahoo.com>

Fixes sr25519 pubkey generation and signing when importing from raw bytes

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.25.1 to 1.26.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.25.1...v1.26.0)

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

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.5.0 to 1.6.1.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.5.0...v1.6.1)

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

* sr25519

* added amino encoding

* fixed dependencies

* Apply suggestions from code review

Co-Authored-By: Tess Rinearson <tess.rinearson@gmail.com>
Co-Authored-By: Marko <marbar3778@yahoo.com>

* file structure

* Apply suggestions from code review

Co-Authored-By: Anton Kaliaev <anton.kalyaev@gmail.com>

* address @melekes and @marbar3778 review

* removed nolint

* CHANGELOG and go-schnorrkel mod update

* p2p/conn: simplify secret connection handshake malleability fix with merlin

Introduces new dependencies on github.com/gtank/merlin and sha3 as a cryptographic primitive

This also only uses the transcript hash as a MAC.

* p2p/conn: avoid string to byte conversion

https://github.com/uber-go/guide/blob/master/style.md#avoid-string-to-byte-conversion

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

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.25.0 to 1.25.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.25.0...v1.25.1)

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

- bump grpc dep as listed here: https://github.com/tendermint/tendermint/pull/4114

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

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.4.0 to 1.5.0.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](https://github.com/spf13/viper/compare/v1.4.0...v1.5.0)

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

Bumps [github.com/gogo/protobuf](https://github.com/gogo/protobuf) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/gogo/protobuf/releases)
- [Commits](https://github.com/gogo/protobuf/compare/v1.3.0...v1.3.1)

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* Add processor prototype

* Change processor API

    + expose a simple `handle` function which mutates internal state

* processor tests

* fix gofmt and ohter golangci issues

* scopelint var on range scope

* add check for short block received

* fix formatting

* small test reorg

* ignore unused for now

* ci fix changes

* go.mod revert

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.23.1 to 1.24.0.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.23.1...v1.24.0)

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Bumps [github.com/tendermint/tm-db](https://github.com/tendermint/tm-db) from 0.1.1 to 0.2.0.
- [Release notes](https://github.com/tendermint/tm-db/releases)
- [Changelog](https://github.com/tendermint/tm-db/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tendermint/tm-db/compare/v0.1.1...v0.2.0)

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Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from 1.23.0 to 1.23.1.
- [Release notes](https://github.com/grpc/grpc-go/releases)
- [Commits](https://github.com/grpc/grpc-go/compare/v1.23.0...v1.23.1)

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* Routines will now use a priority queue instead of channels to
    iterate over events

Bumps [github.com/go-kit/kit](https://github.com/go-kit/kit) from 0.6.0 to 0.9.0.
- [Release notes](https://github.com/go-kit/kit/releases)
- [Commits](https://github.com/go-kit/kit/compare/v0.6.0...v0.9.0)

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Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](https://github.com/stretchr/testify/compare/v1.3.0...v1.4.0)

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- depndabot couldnt update a few deps as they needed to beupdated together.
- PRs: #3946, 3938 can be closed with this PR

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

Bumps [github.com/gorilla/websocket](https://github.com/gorilla/websocket) from 1.2.0 to 1.4.1.
- [Release notes](https://github.com/gorilla/websocket/releases)
- [Commits](https://github.com/gorilla/websocket/compare/v1.2.0...v1.4.1)

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