Chore: Update change log in retrospective, educating about updating to v0.1.0

[amotl]

About

When updating to v0.1.0, existing dlt bookkeeping columns will be invalidated.
Educate about it within the change log.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI (base), Organization UI (inherited)

Review profile: CHILL

Plan: Pro

Run ID: 8810b7b9-530c-41c9-9ff7-62213353bf32

📥 Commits

Reviewing files that changed from the base of the PR and between 845a314 and 5b2f7c9.

📒 Files selected for processing (1)

• CHANGES.md

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Walkthrough

Changelog entry for v0.1.0 describing: new table truncation method, removal of legacy underscore-prefixed column workaround, requirement for CrateDB 6.2+, and a breaking bookkeeping-column rename from __dlt_* to _dlt_* with upgrade invalidation and migration guidance.

Changes

Cohort / File(s)	Summary
Changelog Documentation CHANGES.md	Added v0.1.0 release notes describing: new CrateDbSqlClient._truncate_table_sql, removal of SystemColumnWorkaround (underscore-prefixed columns), CrateDB 6.2+ requirement, invalidation of __dlt_* bookkeeping columns on upgrade and guidance to drop deprecated columns after validation.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A changelog hops into view,
New names, new rules — a tidy queue,
Old underscores take their rest,
Bookkeeping tuned for the next quest,
I nibble updates — onward to 0.1.0! 🚀

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: updating the changelog to educate users about breaking changes in v0.1.0, which aligns with the PR's purpose of documenting the invalidation of _dlt* bookkeeping columns.
Description check	✅ Passed	The description is directly related to the changeset, explaining that the changelog was updated to educate users about breaking changes when updating to v0.1.0, specifically regarding invalidated dlt bookkeeping columns.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch improve-changelog-breaking

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