Laravel 7, drop PHP 7.1 and Laravel 5.x
- Add support for Laravel 7.x
- Drop support for Laravel 5.8 and below
- Drop PHP 7.1 support
- Update minimum requirements for BladeSVG to 0.3.4
- Remove
snake_case
helper (required to support usage of BladeSVG <=0.3.2 in Laravel 6.x)