prepare release notes for 2.0a1

core/todo.txt

@@ -3,6 +3,8 @@ X remove textMode(SCREEN)
 X added expand(long) and expand(double) because of Table
 X PImage.save() with full path raises exception
 X   http://code.google.com/p/processing/issues/detail?id=808
+X update wiki re: PNode... also include notes about the changes
+X add note about textMode(SCREEN) to the wiki
 
 _ change how beginRecord() works.. passing around PApplet vs PGraphics is gross
 _   have to pass PApplet just to make the rendering work to both renderers
@@ -13,10 +15,6 @@ _   for more options, just integrate the fs library?
 _   http://www.superduper.org/processing/fullscreen_api/
 _   https://github.com/kritzikratzi/jAppleMenuBar/blob/master/src/native/jAppleMenuBar.m
 
-X update wiki re: PNode... also include notes about the changes
-_ add note about textMode(SCREEN) to the wiki
-SCREEN was a super fast/efficient way of rendering text with P2D and P3D, but since they're going bye-bye and it's actually slower in the remaining renderers, it's going away.
-
 _ if save() returns boolean, does saveFrame()?
 _   also need to copy this over to android