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themes/hugo-theme-relearn/docs/content/introduction/releasenotes/5/10.en.md

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+title = "Version 5.10"
+type = "releasenotes"
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+## 5.10.0 (2023-01-25) {#5-10-0}
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+### New
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+- {{% badge style="info" icon="plus-circle" title=" " %}}New{{% /badge %}} The [`attachments`](shortcodes/attachments), [`badge`](shortcodes/badge), [`button`](shortcodes/button) and [`notice`](shortcodes/notice) shortcodes have a new parameter `color` to set arbitrary CSS color values.
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+  Additionally the `--ACCENT-color` brand color introduced in version 5.8.0 is now supported with these shortcodes.