* 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

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

* changelog and spec

* comments

* abci: update RequestInfo for versions

* abci: update ResponseInfo for versions

* compile fix

* fix test

* software_version -> version

* comment fix

* update spec

* add test

* comments and fix test

It utilises async IO -> greater performance.

* p2p: add protocol Version to NodeInfo

* update node pkg. remove extraneous version files

* update changelog and docs

* fix test

* p2p: Version -> ProtocolVersion; more ValidateBasic and tests

* 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

We need Google Analytics to start measuring how many developers are viewing our documentation. That way we can gauge how successful an/or useful various pages are. VuePress supports GA and all we have to provide is the tracking code.

This PR also renames the static docs site to "Tendermint Documentation", which is a better representation of the contents than only "Tendermint Core".

* 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)

* Add additional metrics
Continues addressing https://github.com/cosmos/cosmos-sdk/issues/2169.
* Add nop metrics to fix NPE
* Tweak buckets, code review
* Update buckets
* Update docs with new metrics
* Code review updates

* abci: codespace

* changelog

* types: Remove pubkey from validator hash

* undo lock file change

* Update Spec

* first draft for ADR summarizing discussion from:
https://github.com/tendermint/tendermint/issues/1622

* fix link and add comment about pub-key per message and fix link

* fix link and add comment about pub-key per message; also:
 - fix link
 - add little diagram
 - fix typo

* Add a slightly different approach

* typo and ADR number

* docs: fix links

* docs: add readme from each section to the sidebar

* docs: links to dirs need a slash

* docs/spec/abci: consensus params and general merkle

* remove some XXX

* config: remove Mempool.RecheckEmpty

* docs: remove recheck_empty

* minor doc cleanup

* docs/tools: link fixes and readme

* docs/networks: networks/local/README.md

* docs: update vuepress config

* docs: fixes from review

* first commit

finalize rebase

add protoc_merkle to Makefile

* in progress

* fix kvstore

* fix tests

* remove iavl dependency

* fix tx_test

* fix test_abci_cli

fix test_apps

* fix test_apps

* fix test_cover

* rm rebase residue

* address comment in progress

* finalize rebase

* switch to amino for SignBytes and add Reply with error message

- currently only Vote is done

* switch Reply type in socket for other messages

 - add error description on error

* add TODOs regarding error handling

* address comments from peer review session (thx @xla)

 - contains all changes besides the test-coverage / error'ing branches

* increase test coverage:

 - add tests for each newly introduced error'ing code path

* return error if received wrong response

* add test for wrong response branches (ErrUnexpectedResponse)

* update CHANGELOG_PENDING and related documentation (spec)

* fix typo: s/CanonicallockID/CanonicalBlockID

* fixes from review

* add missing options to config.toml template and docs
Refs #2232
* config#ValidateBasic
Refs #2232
* [config] timeouts as time.Duration, not ints
Why:
- native type provides better guarantees than ", in ms" comment (harder
to shoot yourself in the leg)
- flexibility: you can change units

* Add additional metrics to p2p and consensus
Partially addresses https://github.com/cosmos/cosmos-sdk/issues/2169.
* WIP
* Updates from code review
* Updates from code review
* Add instrumentation namespace to configuration
* Fix test failure
* Updates from code review
* Add quotes
* Add atomic load
* Use storeint64
* Use addInt64 in writePacketMsgTo