Split the Linux build into different jobs via a matrix strategy as it…

… takes 2 hours to do the three versions of Python we support, due to needing to compile Boost within each fresh Centos VM image.

Update to 0.0.8, fix Linux and MacOS pathing for `.start` and add `re…

…quests` dependency, and add note to readme about pip requiring an update (as older versions on Linux will reject the ManyLinux2014 packages).