add entry_noise option (#41) Enable/Disable noise on entry nodes

CI: fix publish-sdist 

Release 0.1.4 (#24) 

Add solver params (#21) - Change the API of: update_static_flow_pressure(graph, boundary_flow, params) - PETSc solver parameters can be set in the params.yaml file. - Removed unit test on pressure because values may change up to a constant - Set real values for speed in compute_static_flow_pressure

sliced_ids considers all nodes, not only cc nodes (#16) We were considering only the nodes in the main connected component: `positions = graph.points[cc_mask]` For the sliced_ids, we need all nodes.

Enh/petsc vtk (#14) * vkt is now an optional dependency. Use `pip install astrovascpy[viz]` to enable it. Fixes #13 * Fix PetscBinaryIO.get_conf() value on error. Returns a valid config when PETSc installation cannot be located.

remove pytest from dependencies (#11) I didn't notice, but pytest as well as being in the extras, was also in the dependencies. @cattabiani @matz-e