more docs

docs/algorithms.rst

docs/reference.rst

src/polymesh/Mesh.hh

src/polymesh/algorithms/barycoords.hh

src/polymesh/algorithms/components.hh

src/polymesh/algorithms/decimate.hh

src/polymesh/algorithms/deduplicate.hh

src/polymesh/algorithms/interpolation.hh

src/polymesh/algorithms/operations.hh

src/polymesh/algorithms/stats.hh

src/polymesh/algorithms/subdivision/sqrt3.hh

src/polymesh/algorithms/topology.hh

src/polymesh/algorithms/tracing.hh

src/polymesh/attributes/flags.hh

src/polymesh/attributes/partitioning.hh

src/polymesh/detail/permutation.hh

src/polymesh/objects/cone.hh

src/polymesh/objects/cube.hh

src/polymesh/objects/cylinder.hh

src/polymesh/objects/quad.hh