v3.0.0

• Added compatibility with Firebird 4.0 and 3.0
• Added support for Laravel 9
• Added support for PHP 8.1
• Added Schema::dropIfExists() support
• Added operators: not between, not containing, not starting with
• Overhauled package test suite.
• Changed package base namespace from Firebird\ to HarryGulliford\Firebird\
• Removed version database driver config option
• Dropped support for Firebird 1.5
• Minimum supported Laravel version bumped to 8.x
• Minimum supported PHP version bumped to 7.4