Title post years per holocene calendar

client/gen.exs

@@ -82,7 +82,7 @@ index_file =
   |> Enum.group_by(fn m -> Map.get(m, :date) |> String.slice(12..15) end)
   |> Enum.sort_by(fn {d, _c} -> Integer.parse(d) end)
   |> Enum.reverse()
-  |> Enum.map(fn {year, posts} -> "\n<h1>" <> year <> "</h1>\n<ul>" <> (posts |> Enum.sort_by(date_sort) |> Enum.reverse() |>
+  |> Enum.map(fn {year, posts} -> "\n<h1>" <> "12," <> (year |> String.slice(1..3)) <> "</h1>\n<ul>" <> (posts |> Enum.sort_by(date_sort) |> Enum.reverse() |>
       Enum.map(fn post -> "<li class=\"post-link\">" <>
                             "<time datetime=\""<> Map.get(post, :date) <> "\">" <> (Map.get(post, :date) |> String.slice(0..10)) <> "</time>" <>
                             " - " <>