Edges with floating point weights are not saved

[Dimitris Kalamaras]

1. Create some nodes and edges between them with floating point weights below 1
For instance,
0 0.5 0 0
0 0 0.5 0
0 0 0 0.5
0 0 0 0

2. Try to save the network in any format (graphml, pajek, adjacency).

3. The net is saved but the edges are not.

[Dimitris Kalamaras (dimitris-kalamaras)]

Adjacency format export fixed.

[Dimitris Kalamaras (dimitris-kalamaras)]

GraphML and Pajek exporting fixed.

Adjacency fix should be revisited and the user should have the option to export to either true (0,1) adjacency (without weights) or (0,w) adjacency (with weights).

[Dimitris Kalamaras (dimitris-kalamaras)]

For the adjacency dispute (weights or not), see https://en.wikipedia.org/wiki/Adjacency_matrix