astro 1.0.0-rc.7

#4176 2675b8633 Thanks @bholmesdev! - Support frontmatter injection for MD and MDX using remark and rehype plugins
#4155 81c9ad9a6 Thanks @kagankan! - Add vite.build.cssTaregt support for CSS build
#4137 471c6f784 Thanks @bholmesdev! - Speed up internal markdown builds with new vite-plugin markdown

#4175 69db0298d Thanks @matthewp! - Fixes double doctypes
#4154 36223f663 Thanks @natemoo-re! - Expose getViteConfig from astro/config to unblock usage with Vitest
#4158 e569f0a5c Thanks @natemoo-re! - Fix edge case where MDX components would be escaped
#4157 025743849 Thanks @natemoo-re! - Fix duplicated CSS when using HMR
#4156 82a1063cc Thanks @matthewp! - Add CSS to page when child component uses Astro.glob
#4153 3321aace0 Thanks @FredKSchott! - Improve an error message for getStaticPaths
#4180 c56a9227c Thanks @natemoo-re! - Fix edge case where Astro component would render [Object object] when using MDX
#4136 9afa4611c Thanks @natemoo-re! - Fix issue when using Fragment inside MDX
Updated dependencies [2675b8633, 471c6f784, 16034f0dd]:
- @astrojs/markdown-remark@0.14.1