Remove trivial container/list usage
Remove uses of container/list
fix gremlin documentation for In and Both

this was likely a copy/paste from Out.
feel free to change the wording to fit your style.
Merge pull request #37 from jaywgraves/patch-1

fix gremlin documentation for In and Both
Merge pull request #36 from kortschak/remove-lists

Remove lists
Merge branch 'master' into enumerate-directions

Conflicts:
	graph/linksto_iterator.go