Changes in 0.5.11

* The Genius calculator has been removed, the autoconf/automake files
cleaned.

* Figure can be renamed, the function is in the Edit menu.

Changes in 0.5.10

* Multi level UNDO/REDO feature for geometric figures.

Changes to 0.5.5 from 0.5.6

* Geometric engine rewriten from scratch. It is very tiny now, more
  easy to maintain and extend. The save format of the geometric figure
  and macro-construction has changed. Look drgeo/DevelopersFAQ to know
  more.

