Lint and documentation update.

Change-Id: I05f40983f267dd1534e3eee8c0fc038e4429abed

docs/source/version_history.rst

diff --git a/docs/source/version_history.rst b/docs/source/version_history.rst
index cad4a03..c3c9b67 100644
--- a/docs/source/version_history.rst
+++ b/docs/source/version_history.rst
@@ -48,6 +48,7 @@
    their solver configuration before calling ``Solve``.
 #. Added ``Problem::GetCostFunctionForResidualBlock`` and
    ``Problem::GetLossFunctionForResidualBlock``.
+#. Added Tukey's loss function. (Michael Vitus)
 
 Backward Incompatible API Changes
 ---------------------------------

internal/ceres/rotation_test.cc

diff --git a/internal/ceres/rotation_test.cc b/internal/ceres/rotation_test.cc
index 3a61551..27a939c 100644
--- a/internal/ceres/rotation_test.cc
+++ b/internal/ceres/rotation_test.cc
@@ -1115,13 +1115,11 @@
       // Rotations of angle Pi.
       CheckRotationMatrixToAngleAxisRoundTrip(theta, phi, kPi);
       // Rotation of angle approximately Pi.
-      CheckRotationMatrixToAngleAxisRoundTrip(theta,
-                                              phi,
-                                              kPi - kMaxSmallAngle * RandDouble());
+      CheckRotationMatrixToAngleAxisRoundTrip(
+          theta, phi, kPi - kMaxSmallAngle * RandDouble());
       // Rotations of angle approximately zero.
-      CheckRotationMatrixToAngleAxisRoundTrip(theta,
-                                              phi,
-                                              kMaxSmallAngle * 2.0 * RandDouble() - 1.0);
+      CheckRotationMatrixToAngleAxisRoundTrip(
+          theta, phi, kMaxSmallAngle * 2.0 * RandDouble() - 1.0);
     }
   }
 }