disable FTZ by default

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
don't use floats at all for probability storage

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
sprinkle color information for easy greppage

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
i'm not as think as you rice i am

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
small apparently harmless speedup