segmentio/metalsmith — pull request #103 by boushley (2014-12-15 20:04:31+00:00)
Title: When failing to read a file say which one.

I've run into the problem a couple times when doing mass conversions where a file will have something wrong in the frontmatter and I'll get an error, but don't know which file has the problem.

This ensures that if reading of a file fails you know which file it failed on.