Ready for pytorch v0.4?

Author: r9y9

setup.py

@@ -79,7 +79,7 @@ def create_readme_rst():
       install_requires=[
           "numpy",
           "scipy",
-          "torch >= 0.3.0",
+          "torch >= 0.4.0",
           "unidecode",
           "inflect",
           "librosa",