Switched to slycot for solving the DARE for the KF.

Change-Id: I59fc22f7c73a2fd23d1c61e6c0ef066ad0a27171
diff --git a/frc971/control_loops/python/BUILD b/frc971/control_loops/python/BUILD
index bb2a754..fa94d01 100644
--- a/frc971/control_loops/python/BUILD
+++ b/frc971/control_loops/python/BUILD
@@ -9,6 +9,7 @@
     'libcdd.py',
   ],
   deps = [
+    '//external:python-glog',
     '//external:slycot',
   ],
   data = [