Build fails with recent versions of Boost.

[bkesk]

When compiling against recent versions of boost (tested on the most recent version 1.79.0), many C++ related warnings / errors are raised by the compiler (test with GCC). This is due to the adoption of the C++17 standard in Boost at some point while the Makefile invokes the C++11 standard. This is easily fixed by updating the Makefile to compile using C++17.

It would be even better to make a singularity file to make building / deploying easier.