More robust subtree promotion/demotion
tree011e6a613195e8af5664e13d10b3542e94ee79bc
-rw-r--r-- 17 .gitignore
-rw-r--r-- 18092 LICENSE
-rw-r--r-- 36358 README.md
-rw-r--r-- 234586 markdown-mode.el
drwxr-xr-x - tests
-rwxr-xr-x 1454 webpage.sh