Feature: Canvas (#287)

Draw using braille and block characters on a grid.

examples/dom/CMakeLists.txt

@@ -7,11 +7,11 @@ example(color_info_palette256)
 example(color_truecolor_HSV)
 example(color_truecolor_RGB)
 example(dbox)
+example(canvas)
 example(gauge)
 example(graph)
 example(gridbox)
 example(hflow)
-example(vflow)
 example(html_like)
 example(package_manager)
 example(paragraph)
@@ -28,4 +28,5 @@ example(style_inverted)
 example(style_underlined)
 example(table)
 example(vbox_hbox)
+example(vflow)
 example(window)