Initial release for php 8.1

What's Changed

• PHP 8.1 implementation by @rigoucr in #3

New Contributors

• @rigoucr made their first contribution in #3

Full Changelog: 7.4-r3...8.1-rc1

Fix gd extension

Merge pull request #2 from chirripo/fix-gd-php-7.4

Fix gd in php 7.4.

Update xdebug approach.

It will be enabled by simply setting XDEBUG_ENABLE variable to "enable"

Change xdebug approach

7.3-r2

Change xdebug approach.

Change xdebug approach

7.2-r2

Change xdebug approach.

Initial release

7.4-r1

Add travis badge.

Initial release

7.3-r1

Add travis badge.

Initial release

7.2-r1

Add travis badge.