CodiMD 2.5.1

It's a recovery release that mainly fixes Docker image build issues and security issues.

Security Fixes

• [Security Issue] Bump @hackmd/pandoc.js version to 0.2.0 #1843

Fixes

• Replace mattermost-redux with mattermost/client #1840 @Yukaii
• Fix dependency resolving with prom-client v12 #1834

Thank you

These pull requests came from CodiMD community, thank you guys for being here and making CodiMD awesome ❤️

• @EastSun5566
• @Yukaii