[Snyk] Security upgrade webpack from 2.7.0 to 3.0.0

[kmaida]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - demo/package.json - demo/package-lock.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **551/1000**
**Why?** Recently disclosed, Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-LOADERUTILS-3105943](https://snyk.io/vuln/SNYK-JS-LOADERUTILS-3105943) | Yes | No Known Exploit (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: webpack

The new version differs by 176 commits.

• bf4ec9c 3.0.0
• 9feda63 Merge pull request #5028 from webpack/feature/externalize_uglify_plugin
• 49d6e38 Merge pull request #5086 from webpack/ci/node-8
• 3dcb133 OSX test on node.js 8
• f4b8785 Merge pull request #5012 from webpack/TheLarkInn-patch-1
• d26c402 chore(deps): upgrade uglifyjs-webpack-plugin deps to get latest webpack-sources so tests pass
• 3da4f3e Merge pull request #5085 from jbellenger/jbellenger/rawmodule-hash
• 8c9dc14 fix RawModule hashing
• c2c5d73 Update README.md
• 316d4b9 Merge pull request #5084 from timse/remove-duplicate-code
• ae18552 update test case with changed hash due to less clutter in dependencies
• fc20348 unite iteration through modules into one loop
• 083843e remove code that pushes arrays of dependencies into dependencies
• ab636b0 Merge pull request #5075 from andreipfeiffer/master
• 3b3449c Refactor: use const for non reassignable identifier
• 2ba0499 3.0.0-rc.2
• 1769fa2 Merge pull request #5064 from webpack/feature/scope-hoisting-multi-entry
• a73646a Merge pull request #5060 from mikesherov/reason-chunks-as-set
• 28f826a consistent order
• 8a30188 use Set for ModuleReason chunk rewriting
• 5d4ba56 Allow scope hoisting to process modules in multiple chunks
• d6a7594 harmony modules without exports have no exports instead of unknown
• 3ae782d Merge pull request #5049 from KTruong888/ES6_refactoring_multicompiler
• 18cdba8 4099_ES6 refactor lib/MultiCompiler.js

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project. ------------ **Note:** *You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.* For more information: 🧐 [View latest project report](https://app.snyk.io/org/kim.maida/project/0521d044-bc71-40e1-9cb6-a0a1b5850079?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/kim.maida/project/0521d044-bc71-40e1-9cb6-a0a1b5850079?utm_source=github&utm_medium=referral&page=fix-pr/settings) 📚 [Read more about Snyk's upgrade and patch logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) [//]: # (snyk:metadata:{"prId":"fd7c37b0-4c06-4c7c-8422-225dcab7a1bd","prPublicId":"fd7c37b0-4c06-4c7c-8422-225dcab7a1bd","dependencies":[{"name":"webpack","from":"2.7.0","to":"3.0.0"}],"packageManager":"npm","projectPublicId":"0521d044-bc71-40e1-9cb6-a0a1b5850079","projectUrl":"https://app.snyk.io/org/kim.maida/project/0521d044-bc71-40e1-9cb6-a0a1b5850079?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-JS-LOADERUTILS-3105943"],"upgrade":["SNYK-JS-LOADERUTILS-3105943"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[551]}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Regular Expression Denial of Service (ReDoS)](https://learn.snyk.io/lessons/redos/javascript/?loc=fix-pr)