Change groupId back to com.widen

Remove explicit version from the readme

Fix publishing in CI

Prepare for 0.4.0 release

Group reader/writer into format adapters

Merge pull request #21 from Widen/fix/20-input-stream-readers

Ensure streams support marks during detection

Fix improper publish version

Bump version to 0.1.1

Prepare for 0.1.0 release

Prepare for 0.1.0 alpha1 release