doc: Update the about page.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
doc: Fix typos.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
pywrap: core: Add Convert to module.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
gfxprim_config.py: Add RGB332 8BPP.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
doc: Update dithering documentation.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>