+ Ellipses demo.

+ Moved optimization flags and warning triggers here.
    + Updated the snapshot timestamp.

+ Wrote a little sprite demo.
  * data/:
    + Added bar_fighter (from ttyvaders) and bar_boss (from shapes.txt).

+ outlined triangles demo.

+ Disabled the pyramid demo and wrote a simple triangles demo.

+ Implemented ee_fill_triangle().
  * test/demo.c:
    + Triangle demo.

+ ee_draw_thin_line().
  * test/demo.c:
    + Added a thin lines demo.

+ Putpixel demo.
    + Draw line demo.
    + Draw circle demo.
    + Animated radar demo.

+ got rid of DELAY.
  * test/demo.c:
    + Minor animation effect.

+ Added more compiler warning flags.
  * test/demo.c:
    + Small demo for libee.