Squashed 'external/stb/stb/' content from commit c39c7023e

git-subtree-dir: external/stb/stb
git-subtree-split: c39c7023ebb833ce099750fe35509aca5662695e

.github/CONTRIBUTING.md

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+Pull Requests and Issues are both welcome.
+
+# Responsiveness
+
+General priority order is:
+
+* Crashes
+* Security issues in stb_image
+* Bugs
+* Security concerns in other libs
+* Warnings
+* Enhancements (new features, performance improvement, etc)
+
+Pull requests get priority over Issues. Some pull requests I take
+as written; some I modify myself; some I will request changes before
+accepting them. Because I've ended up supporting a lot of libraries
+(20 as I write this, with more on the way), I am somewhat slow to
+address things. Many issues have been around for a long time.
+
+# Pull requests
+
+* Make sure you're using a special branch just for this pull request. (Sometimes people unknowingly use a default branch, then later update that branch, which updates the pull request with the other changes if it hasn't been merged yet.)
+* Do NOT update the version number in the file. (This just causes conflicts.)
+* Do add your name to the list of contributors. (Don't worry about the formatting.) I'll try to remember to add it if you don't, but I sometimes forget as it's an extra step.
+* Your change needs to compile as both C and C++. Pre-C99 compilers should be supported (e.g. declare at start of block)
+
+# Specific libraries
+
+I generally do not want new file formats for stb_image because
+we are trying to improve its security, so increasing its attack
+surface is counter-productive.
+

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: if you're having trouble using a library, try the support forum instead
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.

.github/ISSUE_TEMPLATE/config.yml

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+contact_links:
+  - name: support forum
+    url: https://github.com/nothings/stb/discussions/categories/q-a
+    about: having trouble using an stb library? don't create an issue, post in the forum

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: 4 enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/PULL_REQUEST_TEMPLATE.md

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+* Delete this list before clicking CREATE PULL REQUEST
+* Make sure you're using a special branch just for this pull request. (Sometimes people unknowingly use a default branch, then later update that branch, which updates the pull request with the other changes if it hasn't been merged yet.)
+* Do NOT update the version number in the file. (This just causes conflicts.)
+* Do add your name to the list of contributors. (Don't worry about the formatting.) I'll try to remember to add it if you don't, but I sometimes forget as it's an extra step.
+
+If you get something above wrong, don't fret it, it's not the end of the world.

.github/workflows/ci-fuzz.yml

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+name: CIFuzz
+on: [pull_request]
+jobs:
+  Fuzzing:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Build Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'stb'
+        dry-run: false
+    - name: Run Fuzzers
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'stb'
+        fuzz-seconds: 900
+        dry-run: false
+    - name: Upload Crash
+      uses: actions/upload-artifact@v1
+      if: failure()
+      with:
+        name: artifacts
+        path: ./out/artifacts