Merge pull request #37 from TheCodingHood/PHP_8

fixing wrong array key type for PHP 8.0

Merge pull request #33 from shadowhand/patch-1

Prevent invalid range offset

Merge pull request #32 from horror/add-ereg-casting-to-string

Add mb_ereg_replace casting to string

Remove support of php7.0 (now lib require php7.1+ to work), improve d…

…ocumentations, tests. fix bugs.

Merge pull request #22 from fe3dback/new-static-func

New static func

Merge pull request #20 from fe3dback/optimizing

final fixes

prerelease

new functions

trim and replace