vizing (v0.2.1)

• Constraint model of edge list-colouring of directed graphs using python-constraint.

vizing (v0.2.0)

• Starting again again.
• Constraint models of node, edge and total list-colouring using python-constraint.
• Node, edge and total list-colouring functions (input is graph with list-assignment, output is col
  oured graph).

vizing (v0.1.1)

• Starting again.
• Removed docs, tests. Leaving only modules behind.
• Start using poetry.