Fix issue #317. Falsey value at end of path
Merge pull request #318 from rragan/master

Fix issue #317. Falsey value at end of path
Clarify comments on path search
Merge pull request #319 from rragan/master

Clarify comments on path search
Update package.json
commit 2.0.1, that adds line and col to parse tree and fixes the #371
sync with latest from LinkedIn/dustjs