See https://reuse.software/ for a description.

Improve the quadrature rule test by "using std::abs" and "using std::pow" and wrapping numbers in ctype
Disable GaussJacobi_n_0 test in case LAPACK is not found

- mac script for 1d rules adopted to new file structure
- Explicit template instantiation for quadrature rules

matched the quad order in the maxima scripts to the definitions in quadraturerules.hh, final cleanup, tested everything

refactored the writequad maxima script, it produces (apart from comments) the same files as before for jacobi rules and gauss lobatto rules