Add ability to use special characters in filenames

New feature: Add ability to use special characters in filenames. Thanks to PR #2 by @backendrulz

Add PHP Docs and unit tests

Improved code hinting

More examples in documentation

Updated readme.md

Add support for Guzzle 7, PHP 8

• Added support for Guzzle 7
• Added support for PHP 8
• Minimum requirement PHP 7.3
• Corrected several linting errors

Adding Tag for backward compatibility

2.0.0

Ignore cache files

stable

Update install instructions