Release version 0.3.1 (#286)

## Summary
- Release version 0.3.1

## Testing Done
none

Author: shimizust

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "liger_kernel"
-version = "0.3.0"
+version = "0.3.1"
 description = "Efficient Triton kernels for LLM Training"
 urls = { "Homepage" = "https://github.com/linkedin/Liger-Kernel" }
 readme = { file = "README.md", content-type = "text/markdown" }