Use new minor version for supporting sf6

Merge pull request #4 from acornforth/master

update bundle's dependency on url-signature package, and enable php8 support

1.1.2 fix #1

Code style improvements; Deprecated UrlSignatureTrait

v 1.1.0 for SF5 compatibilty

1.0.2 version bump

Bumped 1.0.8

Updated readme; Removed unused imports