Two Dimensional Poisson Disc Sampling using Robert Bridson's algorithm
>>> from bridson import poisson_disc_samples
>>> poisson_disc_samples(width=100, height=100, r=10)
[(18.368737154138397, 0.6537095218417459),
(31.037620677039477, 0.11127035812202124),
(42.36176894248073, 7.038053455899708),
...
(39.42578238367568, 99.18831048188478),
(73.33459914827051, 99.50928386778354),
(98.09958160385061, 99.1575330533914)]