updated version

for changes in gluonts 0.9.x

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 setup(
     name="pytorchts",
-    version="0.5.1",
+    version="0.6.0",
     description="PyTorch Probabilistic Time Series Modeling framework",
     long_description=open("README.md").read(),
     long_description_content_type="text/markdown",
@@ -16,7 +16,7 @@ setup(
     python_requires=">=3.6",
     install_requires=[
         "torch>=1.8.0",
-        "gluonts>=0.8.0",
+        "gluonts>=0.9.0",
         "holidays",
         "numpy~=1.16",
         "pandas~=1.1",