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diff --git a/node_modules/etag/HISTORY.md b/node_modules/etag/HISTORY.md
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+1.7.0 / 2015-06-08
+==================
+
+  * Always include entity length in ETags for hash length extensions
+  * Generate non-Stats ETags using MD5 only (no longer CRC32)
+  * Improve stat performance by removing hashing
+  * Remove base64 padding in ETags to shorten
+  * Use MD5 instead of MD4 in weak ETags over 1KB
+
+1.6.0 / 2015-05-10
+==================
+
+  * Improve support for JXcore
+  * Remove requirement of `atime` in the stats object
+  * Support "fake" stats objects in environments without `fs`
+
+1.5.1 / 2014-11-19
+==================
+
+  * deps: crc@3.2.1
+    - Minor fixes
+
+1.5.0 / 2014-10-14
+==================
+
+  * Improve string performance
+  * Slightly improve speed for weak ETags over 1KB
+
+1.4.0 / 2014-09-21
+==================
+
+  * Support "fake" stats objects
+  * Support Node.js 0.6
+
+1.3.1 / 2014-09-14
+==================
+
+  * Use the (new and improved) `crc` for crc32
+
+1.3.0 / 2014-08-29
+==================
+
+  * Default strings to strong ETags
+  * Improve speed for weak ETags over 1KB
+
+1.2.1 / 2014-08-29
+==================
+
+  * Use the (much faster) `buffer-crc32` for crc32
+
+1.2.0 / 2014-08-24
+==================
+
+  * Add support for file stat objects
+
+1.1.0 / 2014-08-24
+==================
+
+  * Add fast-path for empty entity
+  * Add weak ETag generation
+  * Shrink size of generated ETags
+
+1.0.1 / 2014-08-24
+==================
+
+  * Fix behavior of string containing Unicode
+
+1.0.0 / 2014-05-18
+==================
+
+  * Initial release
diff --git a/node_modules/etag/LICENSE b/node_modules/etag/LICENSE
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+(The MIT License)
+
+Copyright (c) 2014-2015 Douglas Christopher Wilson
+
+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/etag/README.md b/node_modules/etag/README.md
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+# etag
+
+[![NPM Version][npm-image]][npm-url]
+[![NPM Downloads][downloads-image]][downloads-url]
+[![Node.js Version][node-version-image]][node-version-url]
+[![Build Status][travis-image]][travis-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+Create simple ETags
+
+## Installation
+
+```sh
+$ npm install etag
+```
+
+## API
+
+```js
+var etag = require('etag')
+```
+
+### etag(entity, [options])
+
+Generate a strong ETag for the given entity. This should be the complete
+body of the entity. Strings, `Buffer`s, and `fs.Stats` are accepted. By
+default, a strong ETag is generated except for `fs.Stats`, which will
+generate a weak ETag (this can be overwritten by `options.weak`).
+
+```js
+res.setHeader('ETag', etag(body))
+```
+
+#### Options
+
+`etag` accepts these properties in the options object.
+
+##### weak
+
+Specifies if the generated ETag will include the weak validator mark (that
+is, the leading `W/`). The actual entity tag is the same. The default value
+is `false`, unless the `entity` is `fs.Stats`, in which case it is `true`.
+
+## Testing
+
+```sh
+$ npm test
+```
+
+## Benchmark
+
+```bash
+$ npm run-script bench
+
+> etag@1.6.0 bench nodejs-etag
+> node benchmark/index.js
+
+  http_parser@1.0
+  node@0.10.33
+  v8@3.14.5.9
+  ares@1.9.0-DEV
+  uv@0.10.29
+  zlib@1.2.3
+  modules@11
+  openssl@1.0.1j
+
+> node benchmark/body0-100b.js
+
+  100B body
+
+  1 test completed.
+  2 tests completed.
+  3 tests completed.
+  4 tests completed.
+
+* buffer - strong x 289,198 ops/sec ±1.09% (190 runs sampled)
+* buffer - weak   x 287,838 ops/sec ±0.91% (189 runs sampled)
+* string - strong x 284,586 ops/sec ±1.05% (192 runs sampled)
+* string - weak   x 287,439 ops/sec ±0.82% (192 runs sampled)
+
+> node benchmark/body1-1kb.js
+
+  1KB body
+
+  1 test completed.
+  2 tests completed.
+  3 tests completed.
+  4 tests completed.
+
+* buffer - strong x 212,423 ops/sec ±0.75% (193 runs sampled)
+* buffer - weak   x 211,871 ops/sec ±0.74% (194 runs sampled)
+  string - strong x 205,291 ops/sec ±0.86% (194 runs sampled)
+  string - weak   x 208,463 ops/sec ±0.79% (192 runs sampled)
+
+> node benchmark/body2-5kb.js
+
+  5KB body
+
+  1 test completed.
+  2 tests completed.
+  3 tests completed.
+  4 tests completed.
+
+* buffer - strong x 92,901 ops/sec ±0.58% (195 runs sampled)
+* buffer - weak   x 93,045 ops/sec ±0.65% (192 runs sampled)
+  string - strong x 89,621 ops/sec ±0.68% (194 runs sampled)
+  string - weak   x 90,070 ops/sec ±0.70% (196 runs sampled)
+
+> node benchmark/body3-10kb.js
+
+  10KB body
+
+  1 test completed.
+  2 tests completed.
+  3 tests completed.
+  4 tests completed.
+
+* buffer - strong x 54,220 ops/sec ±0.85% (192 runs sampled)
+* buffer - weak   x 54,069 ops/sec ±0.83% (191 runs sampled)
+  string - strong x 53,078 ops/sec ±0.53% (194 runs sampled)
+  string - weak   x 53,849 ops/sec ±0.47% (197 runs sampled)
+
+> node benchmark/body4-100kb.js
+
+  100KB body
+
+  1 test completed.
+  2 tests completed.
+  3 tests completed.
+  4 tests completed.
+
+* buffer - strong x 6,673 ops/sec ±0.15% (197 runs sampled)
+* buffer - weak   x 6,716 ops/sec ±0.12% (198 runs sampled)
+  string - strong x 6,357 ops/sec ±0.14% (197 runs sampled)
+  string - weak   x 6,344 ops/sec ±0.21% (197 runs sampled)
+
+> node benchmark/stats.js
+
+  stats
+
+  1 test completed.
+  2 tests completed.
+  3 tests completed.
+  4 tests completed.
+
+* real - strong x 1,671,989 ops/sec ±0.13% (197 runs sampled)
+* real - weak   x 1,681,297 ops/sec ±0.12% (198 runs sampled)
+  fake - strong x   927,063 ops/sec ±0.14% (198 runs sampled)
+  fake - weak   x   914,461 ops/sec ±0.41% (191 runs sampled)
+```
+
+## License
+
+[MIT](LICENSE)
+
+[npm-image]: https://img.shields.io/npm/v/etag.svg
+[npm-url]: https://npmjs.org/package/etag
+[node-version-image]: https://img.shields.io/node/v/etag.svg
+[node-version-url]: http://nodejs.org/download/
+[travis-image]: https://img.shields.io/travis/jshttp/etag/master.svg
+[travis-url]: https://travis-ci.org/jshttp/etag
+[coveralls-image]: https://img.shields.io/coveralls/jshttp/etag/master.svg
+[coveralls-url]: https://coveralls.io/r/jshttp/etag?branch=master
+[downloads-image]: https://img.shields.io/npm/dm/etag.svg
+[downloads-url]: https://npmjs.org/package/etag
diff --git a/node_modules/etag/index.js b/node_modules/etag/index.js
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+/*!
+ * etag
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = etag
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var crypto = require('crypto')
+var Stats = require('fs').Stats
+
+/**
+ * Module variables.
+ * @private
+ */
+
+var base64PadCharRegExp = /=+$/
+var toString = Object.prototype.toString
+
+/**
+ * Generate an entity tag.
+ *
+ * @param {Buffer|string} entity
+ * @return {string}
+ * @private
+ */
+
+function entitytag(entity) {
+  if (entity.length === 0) {
+    // fast-path empty
+    return '"0-1B2M2Y8AsgTpgAmY7PhCfg"'
+  }
+
+  // compute hash of entity
+  var hash = crypto
+    .createHash('md5')
+    .update(entity, 'utf8')
+    .digest('base64')
+    .replace(base64PadCharRegExp, '')
+
+  // compute length of entity
+  var len = typeof entity === 'string'
+    ? Buffer.byteLength(entity, 'utf8')
+    : entity.length
+
+  return '"' + len.toString(16) + '-' + hash + '"'
+}
+
+/**
+ * Create a simple ETag.
+ *
+ * @param {string|Buffer|Stats} entity
+ * @param {object} [options]
+ * @param {boolean} [options.weak]
+ * @return {String}
+ * @public
+ */
+
+function etag(entity, options) {
+  if (entity == null) {
+    throw new TypeError('argument entity is required')
+  }
+
+  // support fs.Stats object
+  var isStats = isstats(entity)
+  var weak = options && typeof options.weak === 'boolean'
+    ? options.weak
+    : isStats
+
+  // validate argument
+  if (!isStats && typeof entity !== 'string' && !Buffer.isBuffer(entity)) {
+    throw new TypeError('argument entity must be string, Buffer, or fs.Stats')
+  }
+
+  // generate entity tag
+  var tag = isStats
+    ? stattag(entity)
+    : entitytag(entity)
+
+  return weak
+    ? 'W/' + tag
+    : tag
+}
+
+/**
+ * Determine if object is a Stats object.
+ *
+ * @param {object} obj
+ * @return {boolean}
+ * @api private
+ */
+
+function isstats(obj) {
+  // genuine fs.Stats
+  if (typeof Stats === 'function' && obj instanceof Stats) {
+    return true
+  }
+
+  // quack quack
+  return obj && typeof obj === 'object'
+    && 'ctime' in obj && toString.call(obj.ctime) === '[object Date]'
+    && 'mtime' in obj && toString.call(obj.mtime) === '[object Date]'
+    && 'ino' in obj && typeof obj.ino === 'number'
+    && 'size' in obj && typeof obj.size === 'number'
+}
+
+/**
+ * Generate a tag for a stat.
+ *
+ * @param {object} stat
+ * @return {string}
+ * @private
+ */
+
+function stattag(stat) {
+  var mtime = stat.mtime.getTime().toString(16)
+  var size = stat.size.toString(16)
+
+  return '"' + size + '-' + mtime + '"'
+}
diff --git a/node_modules/etag/package.json b/node_modules/etag/package.json
new file mode 100644
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+++ b/node_modules/etag/package.json
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+{
+  "_args": [
+    [
+      {
+        "name": "etag",
+        "raw": "etag@~1.7.0",
+        "rawSpec": "~1.7.0",
+        "scope": null,
+        "spec": ">=1.7.0 <1.8.0",
+        "type": "range"
+      },
+      "/Users/warefhaque/CSC309/solutions_repo/node_modules/express"
+    ]
+  ],
+  "_from": "etag@>=1.7.0 <1.8.0",
+  "_id": "etag@1.7.0",
+  "_inCache": true,
+  "_installable": true,
+  "_location": "/etag",
+  "_npmUser": {
+    "email": "doug@somethingdoug.com",
+    "name": "dougwilson"
+  },
+  "_npmVersion": "1.4.28",
+  "_phantomChildren": {},
+  "_requested": {
+    "name": "etag",
+    "raw": "etag@~1.7.0",
+    "rawSpec": "~1.7.0",
+    "scope": null,
+    "spec": ">=1.7.0 <1.8.0",
+    "type": "range"
+  },
+  "_requiredBy": [
+    "/express",
+    "/send"
+  ],
+  "_resolved": "https://registry.npmjs.org/etag/-/etag-1.7.0.tgz",
+  "_shasum": "03d30b5f67dd6e632d2945d30d6652731a34d5d8",
+  "_shrinkwrap": null,
+  "_spec": "etag@~1.7.0",
+  "_where": "/Users/warefhaque/CSC309/solutions_repo/node_modules/express",
+  "bugs": {
+    "url": "https://github.com/jshttp/etag/issues"
+  },
+  "contributors": [
+    {
+      "email": "doug@somethingdoug.com",
+      "name": "Douglas Christopher Wilson"
+    },
+    {
+      "email": "david.bjorklund@gmail.com",
+      "name": "David Björklund"
+    }
+  ],
+  "dependencies": {},
+  "description": "Create simple ETags",
+  "devDependencies": {
+    "beautify-benchmark": "0.2.4",
+    "benchmark": "1.0.0",
+    "istanbul": "0.3.14",
+    "mocha": "~1.21.4",
+    "seedrandom": "2.3.11"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "03d30b5f67dd6e632d2945d30d6652731a34d5d8",
+    "tarball": "https://registry.npmjs.org/etag/-/etag-1.7.0.tgz"
+  },
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "files": [
+    "LICENSE",
+    "HISTORY.md",
+    "README.md",
+    "index.js"
+  ],
+  "gitHead": "a511f5c8c930fd9546dbd88acb080f96bc788cfc",
+  "homepage": "https://github.com/jshttp/etag",
+  "keywords": [
+    "etag",
+    "http",
+    "res"
+  ],
+  "license": "MIT",
+  "maintainers": [
+    {
+      "email": "doug@somethingdoug.com",
+      "name": "dougwilson"
+    }
+  ],
+  "name": "etag",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/jshttp/etag.git"
+  },
+  "scripts": {
+    "bench": "node benchmark/index.js",
+    "test": "mocha --reporter spec --bail --check-leaks test/",
+    "test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot --check-leaks test/",
+    "test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter spec --check-leaks test/"
+  },
+  "version": "1.7.0"
+}