I've discovered, while trying to fix and 'never seen before' bug in my code,
after having installed graph-tool 2.29 from an Ubuntu repo, that some new
features was not backward compatible.
For example, my error came from that fact that now, the function
`get_edges` returns by default a `Nx2` matrix, whereas it used to return
a `Nx3` matrix in prior version.
Another one is that edge property doesn't seem to accept node tuple anymore (e.g. g.ep['weights'][i,j])
After a quick search on the doc, changelog and mailing list, I didn't
find mention of these changes, so I am wandering if there is a place to
find such information, and if there may be other changes that affect the
backward compatibility in new version ?