"fixed" minor leak in Format.
Int toString() no longer leaks.
Non-floating point number toString() works and doesn't leak. Floating point numbers print an empty string, however...
Fixed floating point toString().
Fixed leak in OpenGL Window.
Added drawing of trace, cross,  features and debug boxes.
merged window
Merge pull request #56 from fredrikbryntesson/master

 Added drawing of trace, cross, features and debug boxes.
Changed projection.
Merged