Update README version to 1.4.0

Author: OVVO-Financial

README.md

@@ -23,7 +23,7 @@ NNS is built around partial moments, the lower and upper components of variance,
 |---|---|
 | Distribution package | `ovvo-nns` |
 | Import package | `nns` |
-| Current version | `1.3.0` |
+| Current version | `1.4.0` |
 | Python | `>=3.11` |
 | Required runtime dependencies | NumPy, SciPy |
 | R required at runtime | No |