Add support for graph operations

jaxley/io/__init__.py

@@ -0,0 +1,5 @@
+# This file is part of Jaxley, a differentiable neuroscience simulator. Jaxley is
+# licensed under the Apache License Version 2.0, see <https://www.apache.org/licenses/>
+
+# from jaxley.io.graph import from_graph, to_graph
+from jaxley.io.swc import read_swc