From 31973aaa1293461230511a5740e0ca356a8ac197 Mon Sep 17 00:00:00 2001

Subject: [PATCH 0/1] plain explode to regex split for level-2 headings, support for level-3 + headings, support for content before first level-2 heading (like book cover)

plain explode to regex split for level-2 headings, support for level-3 + headings, support for content before first level-2 heading (like book cover)