requirements.md - Add a "Summary" section

The list of requirements is hard to take in at a glance. This adds a section that you can read at a glance. It's obviously not as thorough as the main requirements, so it's only presented as a summary-recommendation.

added 2 commits

• 1b28b587 - Normalize line-endings
• 5b60a49f - requirements.md - Add a "Summary" section

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Rebased. Now depends on !13 (merged).

merged

mentioned in commit b6fc0495