Nakama 2.7.0 release.

The format is based on [keep a changelog](http://keepachangelog.com) and this project uses [semantic versioning](http://semver.org).

## [Unreleased]

## [2.7.0] - 2019-09-11

### Added

- Allow RPC functions to receive and return raw JSON data.

- Enable RPC functions to receive and return raw JSON data.

- Status follow operations now also accept usernames to follow.

- Pagination support for friends listing operations.

- Filtering by friend state in friends listing operations.

- Filtering by group state in user groups listing operations.

- Allow max count to be set when creating groups from client calls.

- Log better startup error message when database schema is not set up at all.

- New `check` command to validate runtime modules without starting the server.

- New "check" command to validate runtime modules without starting the server.

- Add discrete channel identifier fields in all messages and message history listings.

- Session tokens now allow storage of arbitrary string key-value pairs.

- New runtime function for full account data exports.

- New runtime function for programmatic GDPR account data exports.

### Changed

- Use Go 1.13.0 on Alpine 3.10 as base Docker container image and native builds.

- Group users listing now includes disabled (banned) users.

- User groups listing now includes disabled groups.

- Remove hard cap on maximum number of users per group.

- Ensure deterministic ordering for edge relationship listings.

- Ensure deterministic ordering for storage listing operations.

- Ensure deterministic ordering for leaderboard scores where both score and subscore are identical.

- Return deterministic ordering for edge relationship listings.

- Return deterministic ordering for storage listing operations.

- Return deterministic ordering for leaderboard scores where both score and subscore are identical.

- Consistent default database address between migration command and main server startup.

- Ensure deterministic ordering for group listings without filters.

- Return deterministic ordering for group listings without filters.

### Fixed

- Handle updates during leaderboard schedule reset window.

- Listing user groups no longer returns an error when the user is a member of zero groups.

- Go runtime group creation now correctly validates max count.

- Consistent expiry calculation in leaderboard records haystack queries.

- Convert custom SQL query and exec parameters to integers where appropriate.

- Convert custom SQL query and exec parameters to integers when necessary in Lua runtime.

- Correctly validate users before adding them to groups.

- Add missing group chat channel message when a user joins the group.

- Add missing group chat channel message when a user leaves the group.