Bugs:
No backdrop displayed in XFCE4
   - Kill xfdesktop
   - Or write to named/identified window

Features:
Double-check licensing for plugin interface (LGPL?)

Outline content and data
Fix edge conditions on projections
Give projections hints on pixel sizes

Code to help parsing subsections (with plugins)
Check that headers are installed correctly
More projections
Version handling for plugins
Loxodromes
Labels
Geodesics
Blending overlays
magellan-config script/tool?
X root plugin - allow writing to a named/identified window

Better debug reporting on failure to bind sections (c.f. mdisplay.cc/bind())
