Fixes composer dependencies: Package phpunit/phpunit-mock-objects is abandoned
We cannot support v8 yet because of errors like:
Declaration of MailFunc::setUp() must be compatible with PHPUnit\Framework\TestCase::setUp(): void
It would require dropping PHP < 7.1 support.
- Emoticons: All emoticons-related functionality is handled by the plugin now
- Emoticons: Added option to switch on/off emoticons in compose editor (#1485732)
- Emoticons: Added option to switch on/off emoticons in plain text messages
- Plugin API: Added disabled_plugins an disabled_buttons options in html_editor hook
- Plugin API: Added html2text hook
