Bump to v4.0.0.

floor.js

@@ -0,0 +1,26 @@
+define(['./internal/createRound'], function(createRound) {
+
+  /**
+   * Computes `number` rounded down to `precision`.
+   *
+   * @static
+   * @memberOf _
+   * @category Math
+   * @param {number} number The number to round down.
+   * @param {number} [precision=0] The precision to round down to.
+   * @returns {number} Returns the rounded down number.
+   * @example
+   *
+   * _.floor(4.006);
+   * // => 4
+   *
+   * _.floor(0.046, 2);
+   * // => 0.04
+   *
+   * _.floor(4060, -2);
+   * // => 4000
+   */
+  var floor = createRound('floor');
+
+  return floor;
+});