added numba code, but seems to crash at gaia machine, will look into it later, typo fix
added numba code, but seems to crash at gaia machine, will look into it later, typo fix

maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex,maartenbreddels/vaex