Markdown-Only Prompting for Gemini Technical Docs

If you prefer Markdown over XML for a Gemini 3 prompt, adhere strictly to the single-format consistency rule by using Markdown headings (#, ##) exclusively without mixing in XML tags.

# Role
You are a Principal Technical Writer.

# Context
{{API_CHANGELOG_TEXT}}

# Task
Based on the information above, write a developer migration guide highlighting breaking changes and deprecated endpoints.