Merge pull request #39 from Emerentius/master

Update ord_subset dependency.

Author: alkis

Cargo.toml

@@ -15,7 +15,7 @@ travis-ci = { repository = "alkis/decimal" }
 [dependencies]
 bitflags = "1"
 libc = "0.2"
-ord_subset = { optional = true, version = "2" }
+ord_subset = { optional = true, version = "3" }
 rustc-serialize = { optional = true, version = "0.3" }
 serde = { optional = true, version = "1" }