Markdown-it Insert Text Plugin

markdown-it-ins is a plugin for the popular markdown-it parser that extends its functionality to include support for the HTML `<ins>` (inserted text) tag. It allows users to mark text for insertion using the `++text++` syntax, mirroring the behavior of CommonMark's emphasis rules. The current stable version is 4.0.0, published approximately two years ago, which implies a release cadence tied to upstream `markdown-it` updates or specific feature additions. A key differentiator is its focused purpose: providing `<ins>` tag support specifically for the markdown-it ecosystem, offering a straightforward way to add this semantic markup. While markdown-it itself is highly configurable and extensible, this plugin provides a ready-to-use solution for this specific text-level semantic element without requiring custom rule implementations.