new: changelog posts and images for v0.5.12 (#4388)

Co-authored-by: eckartal <[email protected]>

docs/src/pages/changelog/2024-11-22-jan-bugs.mdx

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+---
+title: "Model downloads & running issues fixed"
+version: 0.5.9
+description: "Jan v0.5.9 is here: fixing what needed fixing."
+date: 2024-11-22
+ogImage: "/assets/images/changelog/jan-v0.5.9.gif"
+---
+
+import ChangelogHeader from "@/components/Changelog/ChangelogHeader"
+
+<ChangelogHeader title= "Jan v0.5.9 is here:fixing what needed fixing" date="2024-11-22" ogImage= "/assets/images/changelog/jan-v0.5.9.gif"  />
+
+Jan v0.5.9 is here: fixing what needed fixing 
+
+### Highlights 🎉 
+
+- Model downloads & running issues fixed
+- Document upload bugs resolved
+- System glitches addressed: Factory Reset, HTTP Proxy, Hugging Face tokens
+- Fixed issues with code blocks in streaming responses
+- Improved the UX of the Local API Server page
+
+Update your product or download the latest: https://jan.ai
+
+For more details, see the [GitHub release notes](https://github.com/janhq/jan/releases/tag/v0.5.9).

docs/src/pages/changelog/2024-11.14-jan-supports-qwen-coder.mdx

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+---
+title: "Jan supports Qwen2.5-Coder 14B & 32B"
+version: 0.5.8
+description: "Jan v0.5.8 is out: Jan supports Qwen2.5-Coder 14B & 32B through Cortex"
+date: 2024-11-14
+ogImage: "/assets/images/changelog/jan-v0.5.8.gif"
+---
+
+import ChangelogHeader from "@/components/Changelog/ChangelogHeader"
+
+<ChangelogHeader title= "Jan supports Qwen2.5-Coder 14B & 32B" date="2024-11-14" ogImage= "/assets/images/changelog/jan-v0.5.7.gif"  />
+
+Jan v0.5.8 is out: Jan supports Qwen2.5-Coder 14B & 32B through Cortex
+
+### Highlights 🎉 
+
+- A new engine: Jan now run models via [Cortex](https://cortex.so)
+- SupportsAlibaba_Qwen's Coder 14B & 32B Support
+- Supports markdown rendering on user messages
+
+and various UI/UX enhancements 💫
+
+Update your product or download the latest: https://jan.ai
+
+For more details, see the [GitHub release notes](https://github.com/janhq/jan/releases/tag/v0.5.8).

docs/src/pages/changelog/2024-12-03-jan-is-faster.mdx

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+---
+title: "Jan v0.5.10 is live"
+version: 0.5.10
+description: "Jan is faster, smoother, and more reliable."
+date: 2024-12-03
+ogImage: "/assets/images/changelog/jan-v0.5.10.gif"
+---
+
+import ChangelogHeader from "@/components/Changelog/ChangelogHeader"
+
+<ChangelogHeader title= "Jan v0.5.10: Jan is faster, smoother, and more reliable." date="2024-12-03" ogImage= "/assets/images/changelog/jan-v0.5.10.gif"  />
+
+Jan v0.5.10 is live: Jan is faster, smoother, and more reliable.
+
+### Highlights 🎉 
+
+- Resolved model startup issues, memory leaks, and improved token limits
+- Clearer error messages and subtle UX improvements
+
+Update your product or download the latest: https://jan.ai
+
+For more details, see the [GitHub release notes](https://github.com/janhq/jan/releases/tag/v0.5.10).

docs/src/pages/changelog/2024-12-05-jan-hot-fix-mac.mdx

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+---
+title: "Jan v0.5.11 is here!"
+version: 0.5.11
+description: "Critical issues fixed, Mac installation updated."
+date: 2024-12-05
+ogImage: "/assets/images/changelog/jan-v0.5.11.gif"
+---
+
+import ChangelogHeader from "@/components/Changelog/ChangelogHeader"
+
+<ChangelogHeader title= "Jan v0.5.11: Jan is faster, smoother, and more reliable." date="2024-12-05" ogImage= "/assets/images/changelog/jan-v0.5.11.gif"  />
+
+Jan v0.5.11 is here - critical issues fixed, Mac installation updated.
+
+### Highlights 🎉 
+
+- Crashes (markdown & code highlighting)
+- Thread switching & auto-scroll
+- Syntax highlighting bugs
+- API issues (Anthropic, OpenRouter)
+- Title glitches with special characters
+- Model settings inconsistencies
+
+Update your product or download the latest: https://jan.ai
+
+For more details, see the [GitHub release notes](https://github.com/janhq/jan/releases/tag/v0.5.11).

docs/src/pages/changelog/2024-12-30-jan-new-privacy.mdx

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+---
+title: "Jan gives you full control over your privacy"
+version: 0.5.12
+description: "Improved Privacy settings to give full control over analytics."
+date: 2024-12-30
+ogImage: "/assets/images/changelog/jan-v0.5.12.gif"
+---
+
+import ChangelogHeader from "@/components/Changelog/ChangelogHeader"
+
+<ChangelogHeader title= "Jan v0.5.12: Improved Privacy settings to give full control over analytics." date="2024-12-30" ogImage= "/assets/images/changelog/jan-v0.5.12.gif"  />
+
+Jan v0.5.11 is here - critical issues fixed, Mac installation updated.
+
+### Highlights 🎉 
+
+- Updated privacy settings with opt-in/out options for Jan Analytics
+- Adjustable chat width
+- The right sidebar and input box are now optimized for new users
+
+### Fixes 💫
+- Updated privacy settings with opt-in/out options for Jan Analytics
+- Adjustable chat width
+- The right sidebar and input box are now optimized for new users
+
+Update your product or download the latest: https://jan.ai
+
+For more details, see the [GitHub release notes](https://github.com/janhq/jan/releases/tag/v0.5.12).