added interactive callback to isolate nodes on circle plot
made interaction optional in circle plot
fix circle plot interaction for multiple subplots
fix circle plot clicks for arbitrary reorderings of nodes using circular_layout
cosmit
Merge pull request #1 from mluessi/pr1116_cosmit

cosmit
fix circle interaction subplot
Merge pull request #2 from mluessi/pr1116_fix_subplot

fix circle interaction subplot
updated changelog
Merge pull request #1116 from aestrivex/circle_plot_interaction

Circle plot interaction