v4.2.22.6 release

Version 4.2.22.6 had one new feature and two bug fixes.

Significant new feature

• Added a new setting that, when toggled on, a) prevents editors from creating multiple revisions of the same asset, and b) prompts them to navigate to the existing revision.

Significant defects addressed

• Corrected an issue throwing a NullPointerException from classes overriding the method State.Listener#beforeFieldGet.
• Corrected an issue causing edited images in the rich-text editor to throw an error. This is in relation to the ConcurrentModificationException in State#getSimpleValuesfor RichTextElement issue.