logilab-common #202314 predictable graph output [validation pending]

graph output generated by the graph module should be somewaht sorted to be predictable and so easily tested (in e.g. pylint)

prioritynormal
typebug
done in0.61.0
load0.100
load left0.000
closed by#c5fc07166e2b [graph] sort dot node/edge attribute for predictabilities. Closes #202314
patch[graph] sort dot node/edge attribute for predictabilities [applied]