#2: Implemented UndirectedAdjacencyGraph
Formated pom.xml
Fixed URLs to repo and CI
Issue #2: Implemented UndirectedAdjacencyGraph
Merge pull request #4 from trs123/export-format

Issue #1: Export graphs to GraphML and DOT formats
Merge branch 'master' of https://github.com/monora/jgraphl
Issue #1: Changed export directory to be subdir of target dir.