v1.0.7

Features:

• Add support for symfony/panther:~1.0 (Thx to @Haehnchen)
• Add support for PHP 8.0

Misc:

• Use dbrekelmans/bdi for fetching chromedriver if not on PHP 7.1.
  Keep using bin/updatePantherChromeDriver.sh if working with PHP 7.1.
• Support and use composer 2 in Dockerfile
• Add support for local development with PHP 7.1, PHP 7.2, PHP 7.3, PHP 7.4 and PHP 8.0 via docker-compose.yml