A variable to disable the application of <h2> and <h3> in the timeline text, or to change the top heading level, would come in handy. I am embedding timelines in a webpage and the built-in formatting is interfering with the semantic structure of the page sections, not to mention it is showing up in the script-generated Table of Contents.
(I understand active development has stopped, but if anyone is keen to help me implement this change, as I am not a developer and not very experienced with JavaScript, that would be great)