HATS systems

[ajtribick]

HATS-11 and HATS-12 are covered by issue #884

HATS-18 http://arxiv.org/abs/1606.00848 HATS-19 to 21 http://arxiv.org/abs/1607.00322 HATS-22 to 24 http://arxiv.org/abs/1607.00688 HATS-25 to 30 http://arxiv.org/abs/1606.00023 HATS-31 to 35 http://arxiv.org/abs/1607.00006

[ajtribick]

These systems have been added.