* reorganize channel handshake handler (cosmos#647)

* reorganize channel handshake handler

split out channel state changes into its own function.

* readjust 27-interchain-accounts to not rely on state being set before the application callback

* add changelog and migration doc entry

* Update modules/core/04-channel/keeper/handshake.go

* docs: ICA Overview (cosmos#626)

* docs: ica overview

* fix: ordering

* add spacing

* fix: spacing

* fix: remove bulletpoints

* fix: wording

* update go mod for security vulnerabilities (cosmos#655)

* update go mod for security vulnerabilities

* update package-lock.json

* update vue dependency (cosmos#662)

* bump glob-parent version in json package (cosmos#663)

* build(deps): bump actions/setup-go from 2.1.4 to 2.1.5 (cosmos#656)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v2.1.4...v2.1.5)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

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

* docs: begin removal of internal "spec" directories (cosmos#634)

* begin removal of spec docs within core ibc

* remove broken link

* Apply suggestions from code review

Co-authored-by: Damian Nolan <[email protected]>

* remove broken link

* remove broken links

* Apply suggestions from code review

Co-authored-by: Carlos Rodriguez <[email protected]>

Co-authored-by: Damian Nolan <[email protected]>
Co-authored-by: Carlos Rodriguez <[email protected]>

* Modify `OnChanOpenTry` application callback to perform app version negotitation (cosmos#646)

* remove NegotiateAppVersion and AppVersion gRPC (cosmos#643)

The NegotiateAppVersion callback has been removed from the IBC Application interface.
The gRPC AppVersion has been removed.
The app version negoitation will be handled by applications by returning the version in OnChanOpenTry.

* Modify `OnChanOpenTry` to return application version (cosmos#650)

* modify OnChanOpenTry to return negotiated version

modify IBCModule interface function OnChanOpenTry to return the negotiated app version. Tests have not been updated

* fix ibc_module_test.go tests

* fix tests

* Apply suggestions from code review

* add handshake test case

* add CHANGELOG and migration docs

* update documentation

* fix broken link

* fix broken link (cosmos#664)

* chore: update make build-docs, add docs build checker (cosmos#667)

* update Makefile, add docs build checker

* Update .github/workflows/check-docs.yml

Co-authored-by: Marko <[email protected]>

Co-authored-by: Marko <[email protected]>

* register ICA query server, fix panics in params query cli (cosmos#666)

Register the controller and host query servers to a chain.
Returns an error upon cli params query failure instead of panicing.

* update of roadmap with latest release (cosmos#653)

* update of roadmap with latest release and changed the way release versions are encoded

* fixed typo

Co-authored-by: Carlos Rodriguez <[email protected]>

* build(deps): bump actions/checkout from 2.3.1 to 2.4.0 (cosmos#672)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.1 to 2.4.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.3.1...v2.4.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

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

* allow ics20 to connect to middleware (cosmos#675)

* allow ics20 to connect to middleware

Creates ics4Wrapper which allows middleware applications to only implement SendPacket to connect ics20 as an application in its middleware stack

* add changelog and migration doc

* fix migration doc spelling

* fix: register InterchainAccount as x/auth GenesisAccount (cosmos#676)

* adding GenesisAccount interface registration for InterchainAccount impl

* updating RegisterInterfaces ica godoc

* enable mergify for backports (cosmos#678)

Co-authored-by: Carlos Rodriguez <[email protected]>

Co-authored-by: Sean King <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Damian Nolan <[email protected]>
Co-authored-by: Carlos Rodriguez <[email protected]>
Co-authored-by: Marko <[email protected]>
Co-authored-by: Carlos Rodriguez <[email protected]>