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1. Commits on May 8, 2026

   • refactor: improve group challenges and add clearer aggregation hints

     ricardohsmello

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   • refactor: improve group example wording and formatting

     ricardohsmello

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   • refactor: improve lookup challenge scaffolding and notebook guidance

     ricardohsmello

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   • Including books collection

     ricardohsmello

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   • refactor: improve unwind example readability and projection style

     ricardohsmello

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   • refactor: improve array aggregation examples and explanatory notes

     ricardohsmello

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   • Including simple comments

     ricardohsmello

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   • refactor: simplify challenge boilerplate so learners can focus on pipeline stages

     ricardohsmello

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   • refactor: improve aggregation sort example and description

     ricardohsmello

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   • refactor: simplify aggregation limit examples and improve descriptions

     ricardohsmello

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   • Add dedicated $project aggregation example and explanation

     ricardohsmello

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   • Add $limit and $project aggregation example

     ricardohsmello

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   • Simplify $match aggregation example using exact title filter

     ricardohsmello

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   • chore: upgrade MongoDB Java driver and remove unnecessary SLF4J logs

     ricardohsmello

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2. Commits on Apr 30, 2026

   • Including sl4j import for removing unnecessary log

     ricardohsmello

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3. Commits on Apr 24, 2026

   • Included challenge description and removed unnecessary code.

     ricardohsmello

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4. Commits on Apr 22, 2026

   • Deleting unecessary line

     ricardohsmello

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   • changing the way to print messages to fix empty collection issue

     ricardohsmello

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5. Commits on Feb 10, 2026

   • Initial commit

     dfreniche

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