PULL_REQUEST_TEMPLATE.md

The purpose of this PR is:

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This is what had to change:

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This is what like reviewers to know:

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• I prefixed the PR-title with docs: , fix(area): , feat(area): or breaking(area):
• I updated ./docs/CHANGELOG.md with a link to this PR or Issue
• I updated ./docs/v3-UPGRADE-GUIDE
• I updated the README.md
• I Added unit test(s)

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• fix #000