4.x

[pjcdawkins]

Major possible changes:

• [x] Symfony 4
• [x] Require PHP >= 7.1 (at least because of Symfony 4)
• [x] New libraries for OAuth 2.0 support (#641)
• [x] Use DI autowiring for commands and services (services via type hints rather than getService('id')), and cache the DI container (#710)
• [x] PHP 7.1 language features
• [ ] Use of SymfonyStyle to format output
• [x] Remove deprecated commands/options/aliases/code
• [ ] Support for newer Platform.sh APIs

Other possible changes:

• Remove CommandBase altogether
• Split integration:add command (to reduce the number of options in help)
• Split or somehow paginate list command
• Better multi support
• Remove --host option
• Use an HTTP (etag-based) cache via the API client, and ditch the manual cache
• Add --no-interaction (alias for --yes)
• ...

No need to release until:

• [ ] there are useful features that can only be implemented in this version or
• [x] there are bug fixes that can only be implemented in this version