:recycle: adding frontend for inbetween

vue-theme/src/pages/list.vue

 
         ul.posts.f-col(v-if="posts && loaded" :class="{ 'is-grid': grid }")
             li(v-for="(post, i) in posts" :key="post.slug").post.shadow
-                card(:content="post" :type="type" :wide="isWide")
+                card(v-if="!post.inbetween" :content="post" :type="type" :wide="isWide")
+                .f-row.w-max(v=v-else-if="post.inbetween")
+                    p {{ post.slug }}
         
         //- Important: Do NOT remove this! Required for intersection observer
         footer