message: Adding toml11 headers to pip build
  This fixes the sdist and installing via pip.
diff: @@ -6,6 +6,7 @@ recursive-include 3rdparty/eigen/Eigen *
  recursive-include 3rdparty/eigen3-nnls/src *.h
  recursive-include 3rdparty/glm/glm *
  recursive-include 3rdparty/nanoflann/include *
  +recursive-include 3rdparty/toml11 *.hpp
  recursive-include 3rdparty/pybind11 *
  recursive-include include *
  recursive-include python *
  