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diff --git a/contexts/data/lib/closure-library/closure/goog/vec/quaternion.js b/contexts/data/lib/closure-library/closure/goog/vec/quaternion.js
deleted file mode 100644
index 35d40b9..0000000
--- a/contexts/data/lib/closure-library/closure/goog/vec/quaternion.js
+++ /dev/null
@@ -1,458 +0,0 @@
-// Copyright 2011 The Closure Library Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-
-/**
- * @fileoverview Implements quaternions and their conversion functions. In this
- * implementation, quaternions are represented as 4 element vectors with the
- * first 3 elements holding the imaginary components and the 4th element holding
- * the real component.
- *
- */
-goog.provide('goog.vec.Quaternion');
-
-goog.require('goog.vec');
-goog.require('goog.vec.Vec3');
-goog.require('goog.vec.Vec4');
-
-
-/** @typedef {goog.vec.Float32} */ goog.vec.Quaternion.Float32;
-/** @typedef {goog.vec.Float64} */ goog.vec.Quaternion.Float64;
-/** @typedef {goog.vec.Number} */ goog.vec.Quaternion.Number;
-/** @typedef {goog.vec.AnyType} */ goog.vec.Quaternion.AnyType;
-
-
-/**
- * Creates a Float32 quaternion, initialized to zero.
- *
- * @return {!goog.vec.Quaternion.Float32} The new quaternion.
- */
-goog.vec.Quaternion.createFloat32 = goog.vec.Vec4.createFloat32;
-
-
-/**
- * Creates a Float64 quaternion, initialized to zero.
- *
- * @return {goog.vec.Quaternion.Float64} The new quaternion.
- */
-goog.vec.Quaternion.createFloat64 = goog.vec.Vec4.createFloat64;
-
-
-/**
- * Creates a Number quaternion, initialized to zero.
- *
- * @return {goog.vec.Quaternion.Number} The new quaternion.
- */
-goog.vec.Quaternion.createNumber = goog.vec.Vec4.createNumber;
-
-
-/**
- * Creates a new Float32 quaternion initialized with the values from the
- * supplied array.
- *
- * @param {goog.vec.AnyType} vec The source 4 element array.
- * @return {!goog.vec.Quaternion.Float32} The new quaternion.
- */
-goog.vec.Quaternion.createFloat32FromArray =
-    goog.vec.Vec4.createFloat32FromArray;
-
-
-/**
- * Creates a new Float64 quaternion initialized with the values from the
- * supplied array.
- *
- * @param {goog.vec.AnyType} vec The source 4 element array.
- * @return {!goog.vec.Quaternion.Float64} The new quaternion.
- */
-goog.vec.Quaternion.createFloat64FromArray =
-    goog.vec.Vec4.createFloat64FromArray;
-
-
-/**
- * Creates a new Float32 quaternion initialized with the supplied values.
- *
- * @param {number} v0 The value for element at index 0.
- * @param {number} v1 The value for element at index 1.
- * @param {number} v2 The value for element at index 2.
- * @param {number} v3 The value for element at index 3.
- * @return {!goog.vec.Quaternion.Float32} The new quaternion.
- */
-goog.vec.Quaternion.createFloat32FromValues =
-    goog.vec.Vec4.createFloat32FromValues;
-
-
-/**
- * Creates a new Float64 quaternion initialized with the supplied values.
- *
- * @param {number} v0 The value for element at index 0.
- * @param {number} v1 The value for element at index 1.
- * @param {number} v2 The value for element at index 2.
- * @param {number} v3 The value for element at index 3.
- * @return {!goog.vec.Quaternion.Float64} The new quaternion.
- */
-goog.vec.Quaternion.createFloat64FromValues =
-    goog.vec.Vec4.createFloat64FromValues;
-
-
-/**
- * Creates a clone of the given Float32 quaternion.
- *
- * @param {goog.vec.Quaternion.Float32} q The source quaternion.
- * @return {goog.vec.Quaternion.Float32} The new quaternion.
- */
-goog.vec.Quaternion.cloneFloat32 = goog.vec.Vec4.cloneFloat32;
-
-
-/**
- * Creates a clone of the given Float64 quaternion.
- *
- * @param {goog.vec.Quaternion.Float64} q The source quaternion.
- * @return {goog.vec.Quaternion.Float64} The new quaternion.
- */
-goog.vec.Quaternion.cloneFloat64 = goog.vec.Vec4.cloneFloat64;
-
-
-/**
- * Initializes the quaternion with the given values.
- *
- * @param {goog.vec.Quaternion.AnyType} q The quaternion to receive
- *     the values.
- * @param {number} v0 The value for element at index 0.
- * @param {number} v1 The value for element at index 1.
- * @param {number} v2 The value for element at index 2.
- * @param {number} v3 The value for element at index 3.
- * @return {!goog.vec.Vec4.AnyType} return q so that operations can be
- *     chained together.
- */
-goog.vec.Quaternion.setFromValues = goog.vec.Vec4.setFromValues;
-
-
-/**
- * Initializes the quaternion with the given array of values.
- *
- * @param {goog.vec.Quaternion.AnyType} q The quaternion to receive
- *     the values.
- * @param {goog.vec.AnyType} values The array of values.
- * @return {!goog.vec.Quaternion.AnyType} return q so that operations can be
- *     chained together.
- */
-goog.vec.Quaternion.setFromArray = goog.vec.Vec4.setFromArray;
-
-
-/**
- * Adds the two quaternions.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The first addend.
- * @param {goog.vec.Quaternion.AnyType} quat1 The second addend.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result. May be quat0 or quat1.
- */
-goog.vec.Quaternion.add = goog.vec.Vec4.add;
-
-
-/**
- * Negates a quaternion, storing the result into resultQuat.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The quaternion to negate.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result. May be quat0.
- */
-goog.vec.Quaternion.negate = goog.vec.Vec4.negate;
-
-
-/**
- * Multiplies each component of quat0 with scalar storing the product into
- * resultVec.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The source quaternion.
- * @param {number} scalar The value to multiply with each component of quat0.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result. May be quat0.
- */
-goog.vec.Quaternion.scale = goog.vec.Vec4.scale;
-
-
-/**
- * Returns the square magnitude of the given quaternion.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The quaternion.
- * @return {number} The magnitude of the quaternion.
- */
-goog.vec.Quaternion.magnitudeSquared =
-    goog.vec.Vec4.magnitudeSquared;
-
-
-/**
- * Returns the magnitude of the given quaternion.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The quaternion.
- * @return {number} The magnitude of the quaternion.
- */
-goog.vec.Quaternion.magnitude =
-    goog.vec.Vec4.magnitude;
-
-
-/**
- * Normalizes the given quaternion storing the result into resultVec.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The quaternion to
- *     normalize.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result. May be quat0.
- */
-goog.vec.Quaternion.normalize = goog.vec.Vec4.normalize;
-
-
-/**
- * Computes the dot (scalar) product of two quaternions.
- *
- * @param {goog.vec.Quaternion.AnyType} q0 The first quaternion.
- * @param {goog.vec.Quaternion.AnyType} q1 The second quaternion.
- * @return {number} The scalar product.
- */
-goog.vec.Quaternion.dot = goog.vec.Vec4.dot;
-
-
-/**
- * Computes the conjugate of the quaternion in quat storing the result into
- * resultQuat.
- *
- * @param {goog.vec.Quaternion.AnyType} quat The source quaternion.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result.
- * @return {!goog.vec.Quaternion.AnyType} Return q so that
- *     operations can be chained together.
- */
-goog.vec.Quaternion.conjugate = function(quat, resultQuat) {
-  resultQuat[0] = -quat[0];
-  resultQuat[1] = -quat[1];
-  resultQuat[2] = -quat[2];
-  resultQuat[3] = quat[3];
-  return resultQuat;
-};
-
-
-/**
- * Concatenates the two quaternions storing the result into resultQuat.
- *
- * @param {goog.vec.Quaternion.AnyType} quat0 The first quaternion.
- * @param {goog.vec.Quaternion.AnyType} quat1 The second quaternion.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result.
- * @return {!goog.vec.Quaternion.AnyType} Return q so that
- *     operations can be chained together.
- */
-goog.vec.Quaternion.concat = function(quat0, quat1, resultQuat) {
-  var x0 = quat0[0], y0 = quat0[1], z0 = quat0[2], w0 = quat0[3];
-  var x1 = quat1[0], y1 = quat1[1], z1 = quat1[2], w1 = quat1[3];
-  resultQuat[0] = w0 * x1 + x0 * w1 + y0 * z1 - z0 * y1;
-  resultQuat[1] = w0 * y1 - x0 * z1 + y0 * w1 + z0 * x1;
-  resultQuat[2] = w0 * z1 + x0 * y1 - y0 * x1 + z0 * w1;
-  resultQuat[3] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
-  return resultQuat;
-};
-
-
-/**
- * Generates a unit quaternion from the given angle-axis rotation pair.
- * The rotation axis is not required to be a unit vector, but should
- * have non-zero length.  The angle should be specified in radians.
- *
- * @param {number} angle The angle (in radians) to rotate about the axis.
- * @param {goog.vec.Quaternion.AnyType} axis Unit vector specifying the
- *     axis of rotation.
- * @param {goog.vec.Quaternion.AnyType} quat Unit quaternion to store the
- *     result.
- * @return {goog.vec.Quaternion.AnyType} Return q so that
- *     operations can be chained together.
- */
-goog.vec.Quaternion.fromAngleAxis = function(angle, axis, quat) {
-  // Normalize the axis of rotation.
-  goog.vec.Vec3.normalize(axis, axis);
-
-  var halfAngle = 0.5 * angle;
-  var sin = Math.sin(halfAngle);
-  goog.vec.Quaternion.setFromValues(
-      quat, sin * axis[0], sin * axis[1], sin * axis[2], Math.cos(halfAngle));
-
-  // Normalize the resulting quaternion.
-  goog.vec.Quaternion.normalize(quat, quat);
-  return quat;
-};
-
-
-/**
- * Generates an angle-axis rotation pair from a unit quaternion.
- * The quaternion is assumed to be of unit length.  The calculated
- * values are returned via the passed 'axis' object and the 'angle'
- * number returned by the function itself. The returned rotation axis
- * is a non-zero length unit vector, and the returned angle is in
- * radians in the range of [-PI, +PI].
- *
- * @param {goog.vec.Quaternion.AnyType} quat Unit quaternion to convert.
- * @param {goog.vec.Quaternion.AnyType} axis Vector to store the returned
- *     rotation axis.
- * @return {number} angle Angle (in radians) to rotate about 'axis'.
- *     The range of the returned angle is [-PI, +PI].
- */
-goog.vec.Quaternion.toAngleAxis = function(quat, axis) {
-  var angle = 2 * Math.acos(quat[3]);
-  var magnitude = Math.min(Math.max(1 - quat[3] * quat[3], 0), 1);
-  if (magnitude < goog.vec.EPSILON) {
-    // This is nearly an identity rotation, so just use a fixed +X axis.
-    goog.vec.Vec3.setFromValues(axis, 1, 0, 0);
-  } else {
-    // Compute the proper rotation axis.
-    goog.vec.Vec3.setFromValues(axis, quat[0], quat[1], quat[2]);
-    // Make sure the rotation axis is of unit length.
-    goog.vec.Vec3.normalize(axis, axis);
-  }
-  // Adjust the range of the returned angle to [-PI, +PI].
-  if (angle > Math.PI) {
-    angle -= 2 * Math.PI;
-  }
-  return angle;
-};
-
-
-/**
- * Generates the quaternion from the given rotation matrix.
- *
- * @param {goog.vec.Quaternion.AnyType} matrix The source matrix.
- * @param {goog.vec.Quaternion.AnyType} quat The resulting quaternion.
- * @return {!goog.vec.Quaternion.AnyType} Return q so that
- *     operations can be chained together.
- */
-goog.vec.Quaternion.fromRotationMatrix4 = function(matrix, quat) {
-  var sx = matrix[0], sy = matrix[5], sz = matrix[10];
-  quat[3] = Math.sqrt(Math.max(0, 1 + sx + sy + sz)) / 2;
-  quat[0] = Math.sqrt(Math.max(0, 1 + sx - sy - sz)) / 2;
-  quat[1] = Math.sqrt(Math.max(0, 1 - sx + sy - sz)) / 2;
-  quat[2] = Math.sqrt(Math.max(0, 1 - sx - sy + sz)) / 2;
-
-  quat[0] = (matrix[6] - matrix[9] < 0) != (quat[0] < 0) ? -quat[0] : quat[0];
-  quat[1] = (matrix[8] - matrix[2] < 0) != (quat[1] < 0) ? -quat[1] : quat[1];
-  quat[2] = (matrix[1] - matrix[4] < 0) != (quat[2] < 0) ? -quat[2] : quat[2];
-  return quat;
-};
-
-
-/**
- * Generates the rotation matrix from the given quaternion.
- *
- * @param {goog.vec.Quaternion.AnyType} quat The source quaternion.
- * @param {goog.vec.AnyType} matrix The resulting matrix.
- * @return {!goog.vec.AnyType} Return resulting matrix so that
- *     operations can be chained together.
- */
-goog.vec.Quaternion.toRotationMatrix4 = function(quat, matrix) {
-  var x = quat[0], y = quat[1], z = quat[2], w = quat[3];
-  var x2 = 2 * x, y2 = 2 * y, z2 = 2 * z;
-  var wx = x2 * w;
-  var wy = y2 * w;
-  var wz = z2 * w;
-  var xx = x2 * x;
-  var xy = y2 * x;
-  var xz = z2 * x;
-  var yy = y2 * y;
-  var yz = z2 * y;
-  var zz = z2 * z;
-
-  matrix[0] = 1 - (yy + zz);
-  matrix[1] = xy + wz;
-  matrix[2] = xz - wy;
-  matrix[3] = 0;
-  matrix[4] = xy - wz;
-  matrix[5] = 1 - (xx + zz);
-  matrix[6] = yz + wx;
-  matrix[7] = 0;
-  matrix[8] = xz + wy;
-  matrix[9] = yz - wx;
-  matrix[10] = 1 - (xx + yy);
-  matrix[11] = 0;
-  matrix[12] = 0;
-  matrix[13] = 0;
-  matrix[14] = 0;
-  matrix[15] = 1;
-  return matrix;
-};
-
-
-/**
- * Computes the spherical linear interpolated value from the given quaternions
- * q0 and q1 according to the coefficient t. The resulting quaternion is stored
- * in resultQuat.
- *
- * @param {goog.vec.Quaternion.AnyType} q0 The first quaternion.
- * @param {goog.vec.Quaternion.AnyType} q1 The second quaternion.
- * @param {number} t The interpolating coefficient.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the result.
- * @return {goog.vec.Quaternion.AnyType} Return q so that
- *     operations can be chained together.
- */
-goog.vec.Quaternion.slerp = function(q0, q1, t, resultQuat) {
-  // Compute the dot product between q0 and q1 (cos of the angle between q0 and
-  // q1). If it's outside the interval [-1,1], then the arccos is not defined.
-  // The usual reason for this is that q0 and q1 are colinear. In this case
-  // the angle between the two is zero, so just return q1.
-  var cosVal = goog.vec.Quaternion.dot(q0, q1);
-  if (cosVal > 1 || cosVal < -1) {
-    goog.vec.Vec4.setFromArray(resultQuat, q1);
-    return resultQuat;
-  }
-
-  // Quaternions are a double cover on the space of rotations. That is, q and -q
-  // represent the same rotation. Thus we have two possibilities when
-  // interpolating between q0 and q1: going the short way or the long way. We
-  // prefer the short way since that is the likely expectation from users.
-  var factor = 1;
-  if (cosVal < 0) {
-    factor = -1;
-    cosVal = -cosVal;
-  }
-
-  // Compute the angle between q0 and q1. If it's very small, then just return
-  // q1 to avoid a very large denominator below.
-  var angle = Math.acos(cosVal);
-  if (angle <= goog.vec.EPSILON) {
-    goog.vec.Vec4.setFromArray(resultQuat, q1);
-    return resultQuat;
-  }
-
-  // Compute the coefficients and interpolate.
-  var invSinVal = 1 / Math.sin(angle);
-  var c0 = Math.sin((1 - t) * angle) * invSinVal;
-  var c1 = factor * Math.sin(t * angle) * invSinVal;
-
-  resultQuat[0] = q0[0] * c0 + q1[0] * c1;
-  resultQuat[1] = q0[1] * c0 + q1[1] * c1;
-  resultQuat[2] = q0[2] * c0 + q1[2] * c1;
-  resultQuat[3] = q0[3] * c0 + q1[3] * c1;
-  return resultQuat;
-};
-
-
-/**
- * Compute the simple linear interpolation of the two quaternions q0 and q1
- * according to the coefficient t. The resulting quaternion is stored in
- * resultVec.
- *
- * @param {goog.vec.Quaternion.AnyType} q0 The first quaternion.
- * @param {goog.vec.Quaternion.AnyType} q1 The second quaternion.
- * @param {number} t The interpolation factor.
- * @param {goog.vec.Quaternion.AnyType} resultQuat The quaternion to
- *     receive the results (may be q0 or q1).
- */
-goog.vec.Quaternion.nlerp = goog.vec.Vec4.lerp;