v4.0.0

Breaking:

• Require Node.js 8 80fda88
• Return undefined instead of null when the path cannot be found a7a9500
• Add ability to specify if looking for file or directory (#40) da17a22
  It now only matches files by default, not also directories. Previously it would match either.

Enhancements:

• Add support for path matcher function (#28) c0f0dd7
• Add TypeScript definition (#35) 905e612

v3.0.0...v4.0.0