Merge pull request CakeDC#265 from CakeDC/feature/is-authorized-helper

Refactoring UserHelper::link to use UserHelper::isAuthorized method

Merge pull request CakeDC#257 from CakeDC/issue/rbac-negative-rules

fix bug on rule calculation when negative rules matched

Merge pull request CakeDC#258 from CakeDC/issue/rbac-negative-rules-30

fix bug on rule calculation when negative rules matched

Update composer.json

Update composer.json

Update CHANGELOG.md

fix docs for 3.1

Update README.md

Merge branch 'develop'