* attempt to fix contentTitle issues when markdown h1 title contains inline code blocks
* mention hide_title frontmatter only prevents frontmatter.title from being added in the dom (not a markdown # title in content)
* alwayss insert MainHeading under the div.markdown container for consistency
* ensure MainHeading has no useless id
* revert https://github.com/facebook/docusaurus/pull/4859 as it's now useless: docMeta.title contains the text/frontmatter title in priority over the contentTitle
* fix docs test after revert
* improve markdownParser and fix tests
* fix docs tests
* markdownParser: restore option to remove contentTitle (mostly for blog plugin)
* use removeContentTitle for blog
* parseMarkdownContentTitle should ignore {#my-anchor-id} syntax
* use frontMatter.title in priority for page meta title
* parseMarkdownString should ignore fixed anchor ids syntax
* docs: make the distinction between headingTitle + metaTitle more clear + add useful todo
* docs: make the distinction between headingTitle + metaTitle more clear + add useful todo
* writeHeadingIds should ignore top-level md title like "# Title"
=> we are not supposed to create anchor links for h1 headers
* update tests
* fix doc tests
* extract createExcerpt code in separate file + add bad test
* almost working markdown parsing refactor
* complete parseMarkdownString refactor
* fix tests
* fix blog test issue
* fix docusaurus utils imports
