v4.2.13.4 release

v4.2.13.4 had four bug fixes.

Significant defects addressed

• Corrected an issue in which placeholder text was missing from the rich-text editor.
• Corrected an issue in which previewing an item that included certain types of rich-text elements caused the browser to become unresponsive.
• Corrected an issue in which workflow APIs were failing without a current web request.
• Corrected an issue in which placeholder text placed into a module was not clearing out any placeholder text that previously existed within the module.