Use the released version of enumber.

- enumber 0.3 has been released.  It is no longer necessary to use
    an unreleased version.

Cargo.toml

@@ -21,8 +21,7 @@ buffered-reader = "1"
 chrono = "0.4"
 configparser = "2"
 csv = "1.1"
-# XXX: Until enumber is released with this commit.
-enumber = { git = "https://github.com/kinnison/enumber/", rev = "810972f23d5874edbb1761db8cb0f59dfb5dbfa9" }
+enumber = "0.3"
 lazy_static = "1"
 libc = "0.2"
 lru = "0.6.6"