AndrewAnnex/SpiceyPy: SpiceyPy 2.1.0

Added Completed wrapping of all new N66 DSK functions 3.6 classifier context manager for turning on/off found flag catches contributor guide freebsd support added tests for dozens of functions, wrapped almost all remaining functions Fixed added six and numpy to setup_requires setup.py kwargs bugs in some tests Changed changed naming of vectorToList to cVectorToPython Updated getspice module to use urllib3 for OpenSSL library versions older than OpenSSL 1.0.1g. getspice module provides now a class that handles the downloading and unpacking of N066 CSPICE distribution. Updated setup to pack the CSPICE installation code into a class that extends the setuptools.command.install command. made vectorized functions more consistent changed tests to point to smaller kernel set hosted on githu