Added empty NetworkLineConnectivityMetric
Merge remote-tracking branch 'origin/master' into 42-sna-metrics
Merge remote-tracking branch 'origin/master' into 42-sna-metrics
repair test
moved the utils
testing the social network features
Merge remote-tracking branch 'origin/master' into 42-sna-metrics
Merge remote-tracking branch 'origin/master' into 42-sna-metrics
Merge remote-tracking branch 'origin/master' into 42-sna-metrics
fixed #66
fixes #24