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diff --git a/node_modules/remove-array-items/.npmignore b/node_modules/remove-array-items/.npmignore
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index 00000000..62225b48
--- /dev/null
+++ b/node_modules/remove-array-items/.npmignore
@@ -0,0 +1,4 @@
+.DS_Store
+*.log
+node_modules
+.env*
diff --git a/node_modules/remove-array-items/.travis.yml b/node_modules/remove-array-items/.travis.yml
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+++ b/node_modules/remove-array-items/.travis.yml
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+sudo: false
+
+language: node_js
+
+node_js:
+- '0.10'
+- '0.12'
+- '1'
+- '2'
+- '3'
+- '4'
+- '5'
+- '6'
+- '7'
+
+matrix:
+  include:
+  - node_js: '0.10'
+    env: BROWSER_NAME=chrome BROWSER_VERSION=latest
+  - node_js: '0.10'
+    env: BROWSER_NAME=chrome BROWSER_VERSION=29
+  - node_js: '0.10'
+    env: BROWSER_NAME=firefox BROWSER_VERSION=latest
+  - node_js: '0.10'
+    env: BROWSER_NAME=opera BROWSER_VERSION=latest
+  - node_js: '0.10'
+    env: BROWSER_NAME=safari BROWSER_VERSION=latest
+  - node_js: '0.10'
+    env: BROWSER_NAME=safari BROWSER_VERSION=7
+  - node_js: '0.10'
+    env: BROWSER_NAME=safari BROWSER_VERSION=6
+  - node_js: '0.10'
+    env: BROWSER_NAME=safari BROWSER_VERSION=5
+  - node_js: '0.10'
+    env: BROWSER_NAME=ie BROWSER_VERSION=11
+  - node_js: '0.10'
+    env: BROWSER_NAME=ie BROWSER_VERSION=10
+  - node_js: '0.10'
+    env: BROWSER_NAME=ie BROWSER_VERSION=9
\ No newline at end of file
diff --git a/node_modules/remove-array-items/LICENSE b/node_modules/remove-array-items/LICENSE
new file mode 100644
index 00000000..d1c9e2fb
--- /dev/null
+++ b/node_modules/remove-array-items/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Mike Reinstein
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/node_modules/remove-array-items/README.md b/node_modules/remove-array-items/README.md
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--- /dev/null
+++ b/node_modules/remove-array-items/README.md
@@ -0,0 +1,36 @@
+# remove-array-items
+
+remove items from a javascript array without generating memory garbage.
+
+[![Build Status](https://travis-ci.org/mreinstein/remove-array-items.svg?branch=master)](https://travis-ci.org/mreinstein/remove-array-items)
+
+Despite there being a number of "remove array items" in npm, I couldn't find satisfying all criteria:
+
+* **doesn't generate garbage**
+* **performs similar or better to the native `array.splice`**
+* has tests
+* es3+ compatible
+
+so here we are.
+
+originally inspired by https://gamealchemist.wordpress.com/2013/05/01/lets-get-those-javascript-arrays-to-work-fast/
+
+(which is a gold mine for performant, non-garbage generating array operations by the way.)
+
+
+## api
+
+```javascript
+removeItems(arr, startIdx, removeCount)
+```
+
+
+## usage
+
+```javascript
+const removeItems = require('remove-array-items')
+
+const arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]
+
+removeItems(arr, 3, 4)  // after running, arr === [ 1, 2, 3, 8, 9 ]
+```
diff --git a/node_modules/remove-array-items/index.js b/node_modules/remove-array-items/index.js
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--- /dev/null
+++ b/node_modules/remove-array-items/index.js
@@ -0,0 +1,28 @@
+'use strict'
+
+/**
+ * Remove a range of items from an array
+ *
+ * @function removeItems
+ * @param {Array<*>} arr The target array
+ * @param {number} startIdx The index to begin removing from (inclusive)
+ * @param {number} removeCount How many items to remove
+ */
+module.exports = function removeItems(arr, startIdx, removeCount)
+{
+  var i, length = arr.length
+
+  if (startIdx >= length || removeCount === 0) {
+    return
+  }
+
+  removeCount = (startIdx + removeCount > length ? length - startIdx : removeCount)
+
+  var len = length - removeCount
+
+  for (i = startIdx; i < len; ++i) {
+    arr[i] = arr[i + removeCount]
+  }
+
+  arr.length = len
+}
diff --git a/node_modules/remove-array-items/package.json b/node_modules/remove-array-items/package.json
new file mode 100644
index 00000000..cd2af476
--- /dev/null
+++ b/node_modules/remove-array-items/package.json
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+{
+  "name": "remove-array-items",
+  "version": "1.0.0",
+  "description": "remove items from a javascript array without generating memory garbage",
+  "main": "index.js",
+  "scripts": {
+    "test": "tap ./test"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/mreinstein/remove-array-items.git"
+  },
+  "keywords": [
+    "array",
+    "splice",
+    "remove",
+    "nogarbage",
+    "gcfriendly"
+  ],
+  "author": "Mike Reinstein",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/mreinstein/remove-array-items/issues"
+  },
+  "homepage": "https://github.com/mreinstein/remove-array-items#readme",
+  "devDependencies": {
+    "tap": "^10.3.2"
+  }
+}
diff --git a/node_modules/remove-array-items/test/index.js b/node_modules/remove-array-items/test/index.js
new file mode 100644
index 00000000..8729ec36
--- /dev/null
+++ b/node_modules/remove-array-items/test/index.js
@@ -0,0 +1,33 @@
+'use strict'
+
+var removeItems = require('../index')
+var test        = require('tap').test
+
+
+test('should return if the start index is greater than or equal to the length of the array', function(t) {
+  var arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
+  removeItems(arr, arr.length + 1, 5)
+  t.equals(arr.length, 10)
+  t.end()
+})
+
+test('should return if the remove count is 0', function(t) {
+  var arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
+  removeItems(arr, 2, 0)
+  t.equals(arr.length, 10)
+  t.end()
+})
+
+test('should remove the number of elements specified from the array, starting from the start index', function(t) {
+  var arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
+  removeItems(arr, 3, 4)
+  t.deepEquals(arr, [ 1, 2, 3, 8, 9, 10 ])
+  t.end()
+})
+
+test('should remove other elements if delete count is > than the number of elements after start index', function(t) {
+  var arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
+  removeItems(arr, 7, 10)
+  t.deepEquals(arr, [ 1, 2, 3, 4, 5, 6, 7 ])
+  t.end()
+})