Convert Markdown to Jira wiki markup
Jira’s classic editor uses wiki markup, not Markdown — so pasting a README or
PR description straight in leaves you with broken # headings and **stars**.
This tool maps Markdown to the right Jira syntax: # Heading becomes h1.,
**bold** becomes *bold*, `code` becomes {{code}}, fenced blocks
become {code}, and [text](url) becomes [text|url].
Lists (including nesting), blockquotes, strikethrough and rules are converted too. Everything happens in your browser — nothing is uploaded.