DOC Adds recent core devs to _contributors.rst
.. _Roman Yurchak: https://github.com/rth
.. _Hanmin Qin: https://github.com/qinhanmin2014
+
+.. _Adrin Jalali: https://github.com/adrinjalali
+
+.. _Thomas Fan: https://github.com/thomasjpfan
+
+.. _Nicolas Hug: https://github.com/NicolasHug
