Update 0.5 release notes

docs/docs/the-marten-project/release-notes/0.5.md

@@ -86,6 +86,7 @@ article.category # => Category::BLOG
 * The [`include`](../../templates/reference/tags.md#include) template tag now supports `isolated` and `contextual` suffixes that allow specifying whether the included templates should have access to the outer context variables. Unless specified, the default behavior is controlled by the new [`templates.isolated_inclusions`](../../development/reference/settings.md#isolated_inclusions) setting.
 * A new [`capture`](../../templates/reference/tags.md#capture) template tag was introduced to make it possible to easily assign the output of a block of code to a new variable.
 * The output of the [`csrf_token`](../../templates/reference/tags.md#csrf_token) template tag can now be outputted to a variable by leveraging the `as` keyword.
+* The `loop` variable, which is available when using the [`for`](../../templates/reference/tags.md#for) template tag, now supports `even?` and `odd?` attributes.
 
 #### Development