rational: bump to 0.1.40

rational/Cargo.toml

@@ -8,7 +8,7 @@ categories = [ "algorithms", "data-structures", "science" ]
 license = "MIT/Apache-2.0"
 name = "num-rational"
 repository = "https://github.com/rust-num/num"
-version = "0.1.39"
+version = "0.1.40"
 
 [dependencies]