Modifying Mirah search terms
Merge pull request #1383 from github/mirah-search

Modifying Mirah search terms
Most Xcode files have a human-readable diff now!
Actually let's keep those.
pbproj's are cool too.
Merge pull request #1385 from joshaber/master

XCodes
Add a multitude of Forth file extensions.
Yes, these are all in use.
Add Groff sample.
Update samples.json.
Make test_pedantic accept quotes around extensions.