convert to pyproject.toml

Author: d70-t

MANIFEST.in

@@ -1,7 +1,10 @@
 from .async_ipfs import AsyncIPFSFileSystem, AsyncIPNSFileSystem
+from importlib.metadata import version, PackageNotFoundError
 
-from ._version import get_versions
-__version__ = get_versions()['version']
-del get_versions
+try:
+    __version__ = version("package-name")
+except PackageNotFoundError:
+    # package is not installed
+    pass
 
 __all__ = ["__version__", "AsyncIPFSFileSystem", "AsyncIPNSFileSystem"]