Added more paths to graph edit

Changed variable names to be more descriptive, added paths, converted to
metric.

Change-Id: Ic8474b567d1794082fe275a5e1a86e14688acb53
diff --git a/y2018/control_loops/python/BUILD b/y2018/control_loops/python/BUILD
index 5a44834..eea64ad 100644
--- a/y2018/control_loops/python/BUILD
+++ b/y2018/control_loops/python/BUILD
@@ -96,3 +96,15 @@
         "//third_party/matplotlib-cpp",
     ],
 )
+
+py_binary(
+    name = "graph_edit",
+    srcs = [
+        "basic_window.py",
+        "graph_edit.py",
+        "graph_generate.py",
+    ],
+    # Sigh, these aren't respected.
+    default_python_version = "PY3",
+    srcs_version = "PY3",
+)