* 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

* add signing spec

* fixes from review

* more fixes

* fixes from review

* add rpc to docs navbar and close #3000

* Update config.js

* config: cors options are arrays of strings, not strings

Fixes #2980

* docs: update tendermint-core/configuration.html page

* set allow_duplicate_ip to false

* in `tendermint testnet`, set allow_duplicate_ip to true

Refs #2712

* fixes after Ismail's review

* update go version & other cleanup

* fix lints

* go one.eleven.four

* keep circle on 1.11.3 for now

* fix docs / proxy app, closes #2986

* counter_serial

* review comments

* list all possible options

* add changelog entries

* config: cors options are arrays of strings, not strings

Fixes #2980

* docs: update tendermint-core/configuration.html page

* set allow_duplicate_ip to false

* in `tendermint testnet`, set allow_duplicate_ip to true

Refs #2712

* fixes after Ismail's review

* Revert "set allow_duplicate_ip to false"

This reverts commit 24c1094ebc.

Co-Authored-By: zramsay <zach.ramsay@gmail.com>

Co-Authored-By: zramsay <zach.ramsay@gmail.com>

- rename fields, methods, comments, tests

* 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

* update docs

- make install_c cmd (install)
- explain node IDs (quick-start)
- update UPGRADING section (using-tendermint)

* use git clone with JS example

JS devs may not have Go installed and we should not force them to.

* rewrite sentence

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

Quick fix for #2902

Ref #2827

(I have since seen #2847 which is a fix for the same issue; this PR has tests and docs too ;) )

Closes #2884

Refs #2877

* 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

* wip

* use same ADR template as SDK

* finish docs adr

* lil fixes

* Introduce a structured logging option

* rename StructuredLog to LogFormat

* add changelog entry

* move log_format under log_level

* add adr-034

* update changelog

* minor changes

* do some refactor

* dedup with spec/abci/client-server

* fixup abci/readme

* link to getting started in abci/README

* https

* spec/abci: some deduplication

* docs: remove extraneous comment

* pubsub adr

Refs #951, #1879, #1880

* highlight question

* fix typos after Ismail's review

* 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 year to log format

* update documentation

* 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

* types: first field in Canonical structs is Type

* fix spec