TODO.md

Content things

• describe the translation in index.tree
• replace ... with some custom "to-do" macro
• replace "" by “”
• replace ' by ’ (?)

Forester things

• footnotes
• numbering in lists (e.g. in sga-1.i.2)
• \ref for non-existent trees
• \ref that includes title (for e.g. Exposés)
• pretty URLs?
• recognising É as a capital letter