Release post for v4.1.1

docs/_posts/2020-06-10-jekyll-4-1-1-released.markdown

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+---
+title: 'Jekyll 4.1.1 Released'
+date: 2020-06-10 18:45:35 +0530
+author: ashmaroli
+version: 4.1.1
+category: release
+---
+
+Jekyll 4.1.0 brought two notable changes: *Page-excerpts* and *Liquid Drop for Page objects*.
+However these seemingly benign changes had unexpected adverse side-effects which did not figure in our tests.
+
+The Core team decided that the best way forward is to revert introduction of the Liquid drop for Pages but push back
+generating excerpts for pages behind a flag until `v5.0`.
+
+Page-excerpts are henceforth an opt-in experimental feature which can be enabled by setting `page_excerpts: true` in
+your configuration file. Due to its experimental nature, we have narrowed the scope for page-excerpts to limit their
+negative effect on builds. Excerpts will not be generated for pages that *do not* output into an HTML file even if
+`page_excerpts: true` has been set in the configuration file.
+
+Another known issue with page-excerpts is that an infinite loop is created in certain use-cases.
+
+Therefore, we advise caution when opting to use the page-excerpt feature.