MarkdownPreviewEnhanced 0.1.6
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- docs: present features as a checklist table
- feat: unify plugin logging and quiet tagged releases
- fix: cache mermaid/echarts locally and drop diagnostic client logs
- fix: share one SSE across preview tabs to stop Chrome connection hang
- fix: replace vendored markdown/pygments with mdpopups dependency (issue #2)
- docs: add WeChat 赞赏码 to README and funding links
- docs: add Buy Me a Coffee and GitHub Sponsors links
- docs: list features in English and Chinese READMEs
- docs: bilingual usage READMEs; move build/PR notes to CONTRIBUTING
