* Begin simple merkle compatibility PR

* Fix query_test

* Use trillian test vectors

* Change the split point per RFC 6962

* update spec

* refactor innerhash to match spec

* Update changelog

* Address @liamsi's comments

* Write the comment requested by @liamsi

* Consistent order fields of Timestamp/BlockID fields in CanonicalVote and
CanonicalProposal

* update spec too

* Introduce and use IsZero & IsComplete:
 - update IsZero method according to spec and introduce IsComplete
 - use methods in validate basic to validate: proposals come with a
 "complete" blockId and votes are either complete or empty
 - update spec: BlockID.IsNil() -> BlockID.IsZero() and fix typo

* BlockID comes first

* fix tests

* Initial work towards making ConsensusCore spec complete

* Initial version of executor and complete consensus

* Don't use pointer receivers for PubKeyMultisigThreshold

* test that showcases panic when PubKeyMultisigThreshold are used in sdk:

 - deserialization will fail in `readInfo` which tries to read a
 `crypto.PubKey` into a `localInfo` (called by
  cosmos-sdk/client/keys.GetKeyInfo)

* Update changelog

* Rename routeTable to nameTable, multisig key is no longer a pointer

* sed -i 's/PubKeyAminoRoute/PubKeyAminoName/g' `grep -lrw PubKeyAminoRoute .`

upon Jae's request

* AminoRoutes -> AminoNames

* sed -e 's/PrivKeyAminoRoute/PrivKeyAminoName/g'

* Update crypto/encoding/amino/amino.go

Co-Authored-By: alessio <quadrispro@ubuntu.com>

privval: remove GetAddress(), memoize pubkey

* update go version & other cleanup

* fix lints

* go one.eleven.four

* keep circle on 1.11.3 for now

* WIP: tests for #2785

* rebase onto develop

* add Bucky's test without changing ValidatorSet.Update

* make TestValidatorSetBasic fail

* add ProposerPriority preserving fix to ValidatorSet.Update to fix
TestValidatorSetBasic

* fix randValidator_ to stay in bounds of MaxTotalVotingPower

* check for expected proposer and remove some duplicate code

* actually limit the voting power of random validator ...

* fix test

* types: ValidatorSet.Update preserves ProposerPriority

This solves the other issue discovered as part of #2718,
where Accum (now called ProposerPriority) is reset to
0 every time a validator is updated.

* update changelog

* add test

* update comment

* Update types/validator_set_test.go

Co-Authored-By: ebuchman <ethan@coinculture.info>

- rename fields, methods, comments, tests

* set the accum of a new validator to (-total voting power):

- disincentivize validators to unbond, then rebon to reset their
negative Accum to zero

additional unrelated changes:
- do not capitalize error msgs
- fix typo

* review comments: (re)capitalize errors & delete obsolete comments

* More changes suggested by @melekes

* WIP: do not batch clip (#2809)

* substract avgAccum on each iteration

- temporarily skip test

* remove unused method safeMulClip / safeMul

* always substract the avg accum

 - temp. skip another test

* remove overflow / underflow tests & add tests for avgAccum:

- add test for computeAvgAccum
- as we substract the avgAccum now we will not trivially over/underflow

* address @cwgoes' comments

* shift by avg at the end of IncrementAccum

* Add comment to MaxTotalVotingPower

* Guard inputs to not exceed MaxTotalVotingPower

* Address review comments:

 - do not fetch current validator from set again
 - update error message

* Address a few review comments:

 - fix typo
 - extract variable

* address more review comments:

 - clarify 1.125*totalVotingPower == totalVotingPower + (totalVotingPower >> 3)

* review comments: panic instead of "clipping":

 - total voting power is guarded to not exceed MaxTotalVotingPower ->
 panic if this invariant is violated

* fix failing test

* types: NewValidatorSet doesn't panic on empty valz list

* changelog

* Enforce validators can only use the correct pubkey type

* adapt to variable renames

* Address comments from #2636

* separate updating and validation logic

* update spec

* Add test case for TestStringSliceEqual, clarify slice copying code

* Address @ebuchman's comments

* Split up testing validator update execution, and its validation

* 2871 remove proposalHeartbeat infrastructure

* 2871 add preliminary changelog entry

* upadtes in grpc Marshal and unmarshal

* update comments

This commit makes both EventNewBlock and EventNewBlockHeader emit tags
on the event bus, so subscribers can use them in queries.

* fix fastsync may stuck by a wrong block

* fixes from updates

* fixes from review

* Align spec with the changes

* fmt

* optimize addProposalBlockPart

* optimize addProposalBlockPart

* if ProposalBlockParts and LockedBlockParts both exist,let LockedBlockParts overwrite ProposalBlockParts.

* fix tryAddBlock

* broadcast lockedBlockParts in higher priority

* when appHeight==0, it's better fetch genDoc than state.validators.

* Vagrantfile: install dev_tools

Follow-up on https://github.com/tendermint/tendermint/pull/2824

* update consensus params spec

* fix test name

* rpc_test: panic if failed to start listener

also
- remove http_server#MustListen
- align StartHTTPServer and StartHTTPAndTLSServer functions

* dep: allow minor releases for grpc

* add proposer info to EventCompleteProposal

* create separate EventData structure for CompleteProposal

* cant us rs.Proposal to get BlockID because it is not guaranteed to be set yet

* copying RoundState isnt helping us here

* add Step back to make compatible with original RoundState event. update changelog

* add NewRound event

* fix test

* remove unneeded RoundState

* put height round step into a struct

* pull out ValidatorInfo struct. add ensureProposal assert

* remove height-round-state sub-struct refactor

* minor fixes from review

* fix amino overhead computation for Tx:

- also count the fieldnum / typ3
- add method to compute overhead per Tx
- slightly clarify comment on MaxAminoOverheadForBlock
- add tests

* fix TestReapMaxBytesMaxGas according to amino overhead

* fix TestMempoolFilters according to amino overhead

* address review comments:

 - add a note about fieldNum = 1
 - add forgotten godoc comment

* fix and use sm.TxPreCheck

* fix test

* remove print statement

Fixes #2740

* validate reactor messages

Refs #2683

* validate blockchain messages

Refs #2683

* validate evidence messages

Refs #2683

* todo

* check ProposalPOL and signature sizes

* add a changelog entry

* check addr is valid when we add it to the addrbook

* validate incoming netAddr (not just nil check!)

* fixes after Bucky's review

* check timestamps

* beef up block#ValidateBasic

* move some checks into bcBlockResponseMessage

* update Gopkg.lock

Fix

```
grouped write of manifest, lock and vendor: failed to export github.com/tendermint/go-amino: fatal: failed to unpack tree object 6dcc6ddc14
```

by running `dep ensure -update`

* bump year since now we check it

* generate test/p2p/data on the fly using tendermint testnet

* allow sync chains older than 1 year

* use full path when creating a testnet

* move testnet gen to test/docker/Dockerfile

* relax LastCommitRound check

Refs #2737

* fix conflicts after merge

* add small comment

* some ValidateBasic updates

* fixes

* AppHash length is not fixed

* tmhash is fully 32 bytes. closes #1990

* AddressSize

* fix tests

* fix max sizes

* Align Proposal message with spec

* Update spec

* Introduce EventValidBlock for informing peer about wanted block

* Merge with develop

* Add isCommit flag to NewValidBlock message

- Add test for the case of +2/3 Precommit from the previous round

* reorder fields

* add TestVoteString & update tests

* remove redundant info from Proposal.String()

* update spec

* revert changes on vote.String() -> more human friendly

* Add ValidatorPubkeyTypes as a consensus param

Ref #2414

* update spec

* address anton's comment

* Switch to Validator and Validator Params

* Correct changelog entry

* Address bucky's comments!

* forgot to update changelog

* fix typo

* fix Params naming

* WIP: update to amino 0.14.0

* update Changelog

* Update to latest amino version (v0.14.0)

This condition is really hard to get. Initially, lockedRound and
validRound are set to -1 as we start with round 0.

Refs #2702

* catch up with amino changes in
https://github.com/tendermint/go-amino/pull/222

* WIP: update to amino v0.13.0

* update to fixed amino release

* types: test tm2pm on fully populated header

* upgrade for amino v0.13.0-rc0

* fix lint

* comment out final test

* use types.NewValidator

* node: set p2p.ProtocolVersion from state, not globals

* types: first field in Canonical structs is Type

* fix spec

* types: dont use SimpleHashFromMap for header. closes #1841

* changelog and spec

* comments

* types: add Version to Header

* abci: add Version to Header

* state: add Version to State

* node: check software and state protocol versions match

* update changelog

* docs/spec: update for versions

* state: more tests

* remove TODOs

* remove empty test

This is a performance regression, but will also spare the types directory
from knowing about RFC 6962, which is a more correct abstraction. For txs
this performance hit will be fixed soon with #2603. For evidence, the
performance impact is negligible due to it being capped at a small number.

* Hash() uses tmhash instead of merkle.SimpleHashFromMap

* marshal whole struct

* update comments

* update docs

* WIP: switching to fixed offsets for SignBytes

* add version field to sign bytes and update order

* more comments on test-cases and add a tc with a chainID

* remove amino:"write_empty" tag

- it doesn't affect if default fixed size fields ((u)int64) are
written or not
- add comment about int->int64 casting

* update CHANGELOG_PENDING

* update documentation

* add back link to issue #1622 in documentation

* remove JSON tags and add (failing test-case)

* fix failing test

* update test-vectors due to added `Type` field

* change Type field from string to byte and add new type alias

- SignedMsgType replaces VoteTypePrevote, VoteTypePrecommit and adds new
ProposalType to separate votes from proposal when signed

- update test-vectors

* fix remains from rebasing

* use SignMessageType instead of byte everywhere

* fixes from review

* require block.Time of the fist block to be genesis time

Refs #2587:

```
We only start validating block.Time when Height > 1, because there is no
commit to compute the median timestamp from for the first block. This
means a faulty proposer could make the first block with whatever time
they want.

Instead, we should require the timestamp of block 1 to match the genesis
time.

I discovered this while refactoring the ValidateBlock tests to be
table-driven while working on tests for #2560.
```

* do not accept blocks with negative height

* update changelog and spec

* nanos precision for test genesis time

* Fix failing test (#2607)

This is just to match the style of the rest of the codebase, and to
reduce the number of files in types.

* crypto/merkle: Remove byter in favor of plain byte slices

This PR is fully backwards compatible in terms of function output!
(The Go API differs though) The only test case changes was to refactor
it to be table driven.

* Update godocs per review comments

* cap evidence in block validation

* state: use table-driven test for ValidateBlockHeader

* state: test evidence cap

* fixes from review

Closes #2525

* types: Remove pubkey from validator hash

* undo lock file change

* Update Spec