update to phoenix 1.6

lib/cannery_web/views/layout_view.ex

@@ -1,7 +1,12 @@
 defmodule CanneryWeb.LayoutView do
   use CanneryWeb, :view
   alias Cannery.{Accounts}
-  
+  alias CanneryWeb.{HomeLive}
+
+  # Phoenix LiveDashboard is available only in development by default,
+  # so we instruct Elixir to not warn if the dashboard route is missing.
+  @compile {:no_warn_undefined, {Routes, :live_dashboard_path, 2}}
+
   def get_title(conn) do
     if conn.assigns |> Map.has_key?(:title) do
       "Cannery | #{conn.assigns.title}"