Render the last line of the layer in 3d view.
Made a new Draw EventHandler for GuiWidget
Made mesh viewer have colors per material
Fixed a bug with typing upper case characters erasing the next letter.
make the return value if there is an error for a number edit control be as good a value as possible.
fixed the mesh loading in ray tracer.
better interface to material colors.
Added handling for mac application icon.
Merge branch 'development' of https://github.com/MatterHackers/agg-sharp into development
Put in point size scaling for radio and check box graphics parts.
Conditional centering
Took out the invoke stuff from gui widget. We use UiThread instead. More like Mono.
Changed the OnIdle timer used by UiThread to a System.Timer rather than a System.Windows.Forms.Timer.
Took out the invoke stuff from gui widget. We use UiThread instead. More like Mono.
Changed the OnIdle timer used by UiThread to a System.Timer rather than a System.Windows.Forms.Timer.
delete dead code
Merge pull request #5 from jlewin/print_at_user_pos

Conditional centering
Save should report progress better (starting)
Load mesh needs to say if it should be centered.
Made an enum rather than an opaque bool.
Changed ButtonEventHandler to EventHandler
Fixed amf loading progress to show correctly.
Made the number edit better at maintaining its correct display state.
Making canceling during load work much better.
STLs can now stop loading during most of the load operations (only sort verts cannot)
We can now cancel amf files while loading.