Sebastian

**Describe the bug** When using as-split with unit `pixel` the gutters with role `slider` fail a11y tests. All mandatory aria attributes are not set like ``` aria-valuemin="40" aria-valuenow="298" aria-valuetext="298 pixel"...

Allow publish of the new version to * Twitter * Microsoft Team * ...

- [x] how to use it - [ ] examples - [ ] travis - [ ] jenkins - [ ] gitlab

Allow update of gradle version Print gradle/maven usage in changelog