Adds feature to check if a branch name exists in a repository without…

… cloning it. (gitonomy#202)

Release v1.3.7

Release v1.3.6

Release v1.3.5

Don't pass null as second parameter to preg_match (gitonomy#190)

Update composer.json

Fixed passing null to integer param

Added missing `ReturnTypeWillChange` annotations

Support Symfony 6 and PHP 8.1

Updated docs