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<!-- What changes are being made? (What feature/bug is being fixed here?) -->
**What**:
Add a way to avoid GITHUB API LIMIT by supplying an optional GITHUB_AUTH token to increase github rate limiting from 50 requests to 5000 (and limited by user, not IP)
<!-- Why are these changes necessary? -->
**Why**:
To address: #121
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**How**:
By Me
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**Checklist**:
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- [ ] Documentation
- [ ] Tests
- [ ] Ready to be merged <!-- In your opinion, is this ready to be merged as soon as it's reviewed? -->
- [ ] Added myself to contributors table <!-- this is optional, see the contributing guidelines for instructions -->
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