+ Added ee_color_names[] containing our 16 color names.
  * libee/ee.c:
    + Extended our color set to the full 16 instead of 10.
    + Precalculate ncurses attributes.
  * libee/graphics.c:
    + Clip color value in ee_set_color().
    + Clip characters in ee_putchar().
    + Partially clip characters in ee_putstr(), overflows aren't checked yet.
  * libee/ee_internals.h:
    + New file to share extern variables within libee.

  * test/demo.c:
    + Added a simple demo_color() to output all colors.
    + Replaced four ee_draw_line() with ee_draw_thin_box().
    + Replaced x1, y1, x2 etc. with xa, ya, xb etc. because <math.h> already
      defines y1.
    + Randomized colours from 0 to 15 instead of 1 to 10.

  * src/Makefiles.am:
    + Added -lm to the ttyvaders linking flags because of the intro.

  * README BUGS TODO:
    + Updated.

+ Wrote ee_draw_triangle() and ee_draw_thin_triangle().
  * libee/box.c:
    + Wrote ee_draw_box(), ee_draw_thin_box() and ee_fill_box().
  * libee/conic.c:
    + Wrote ee_fill_ellipse().
    + First attempt at ee_draw_thin_ellipse(), to be reworked.
  * test/demo.c:
    + Merged demo_lines() and demo_thin_lines().
    + Merged demo_triangles() and demo_outlined_triangles().
    + Wrote demo_box().
    + Use ee_fill_ellipse() in demo_all().

+ Moved ee_putstr() and ee_putchar() in here.
  * libee/ee.h:
    + Got rid of ee_goto().
    + Moved <slang.h> or <curses.h> into libee.
  * Replaced ee_goto()/ee_putstr() pairs with ee_putstr().
  * Ditto for ee_putchar().

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