fix(setup): bump

Author: ClashLuke

setup.py

@@ -10,7 +10,7 @@
     name='truegrad',
     license='BSD',
     description='PyTorch interface for TrueGrad-AdamW',
-    version='2.1.2',
+    version='2.2.0',
     long_description=README,
     url='https://github.com/clashluke/truegrad',
     packages=setuptools.find_packages(),