bigint: add path-dependency versions

bigint/Cargo.toml

@@ -13,9 +13,11 @@ version = "0.1.32"
 
 [dependencies.num-integer]
 path = "../integer"
+version = "0.1.32"
 
 [dependencies.num-traits]
 path = "../traits"
+version = "0.1.32"
 
 [dependencies.rand]
 optional = true