set version to 1.18.0-dev

Author: SteffenDE

installer/mix.exs

@@ -6,7 +6,7 @@ end
 defmodule Phx.New.MixProject do
   use Mix.Project
 
-  @version "1.7.14"
+  @version "1.8.0-dev"
   @scm_url "https://github.com/phoenixframework/phoenix"
 
   # If the elixir requirement is updated, we need to update:

mix.exs

@@ -8,7 +8,7 @@ defmodule Phoenix.MixProject do
     end
   end
 
-  @version "1.7.14"
+  @version "1.8.0-dev"
   @scm_url "https://github.com/phoenixframework/phoenix"
 
   # If the elixir requirement is updated, we need to make the installer