Well, I started to make some progress - namely, at last I remembered my password for Github
Openmailbox seems to be down...
So, the plan is, as discussed with various people:
1) Revive Makefile.std (Nick)
2) Remove "Cursor" option from the menu (fph)
3) Change menu colors (wkmanire)
4) Write a help file (wkmanire)
5) Windows version (Grotug)
6) Bigger font size with high DPI displays (Bandobras)
Let me know if I'm forgetting something.