Update to Angular 9 for angular-particle-effect-button npm package

angular-particle-effect-button has now been upgraded to Angular 9

If you don’t know what this package does, go here first.

Thanks to PowerKiKi now this package is upgraded to Angular 9.

npm package at version 0.0.50.

Demo on codesandbox

This new version includes:

• Tests fixed
• Dependencies updated.
• Angular Universal compatibility
• GitHub Actions

Enjoy!