chore: Release petgraph-graphml version 5.0.0

chore: Release petgraph-graphml version 3.1.0

Merge #47

47: Actually bump version r=jonasbb a=jonasbb

bors merge

Co-authored-by: Jonas Bushart <jonas@bushart.org>

Merge #19

19: Cleanup some oversights while migrating to the newer petgraph r=jonasbb a=jonasbb


* Use 2018 edition
* Make version-sync a dev dependency to remove unnecessary dependencies

Co-authored-by: Jonas Bushart <jonas@bushart.org>

Merge #18

18: Correct SPDX licence expression r=jonasbb a=jonasbb



Co-authored-by: Jonas Bushart <jonas@bushart.org>

Merge #7

7: Minor version increase to update the documentation r=jonasbb a=jonasbb

bors r+

Co-authored-by: Jonas Bushart <jonas@bushart.org>

Merge #1

1: Add library implementation r=jonasbb a=jonasbb



Co-authored-by: Jonas Bushart <jonas@bushart.org>