Licensing issue

[drewm1980]

This project's license:

https://github.com/JialeCao001/SipMask/blob/master/LICENSE

is in conflict with the license of FCOS, which this code is based on:

https://github.com/tianzhi0549/FCOS/blob/master/LICENSE

Which, like most of the code from the Adelaide Intelligent Machines (AIM) Group is under either a non-commercial or academic license depending where you look (at the bottom of README, or in the ~title of their modified bsd license).