Fix mix format and format migrations too

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Fix credo warnings

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Show elixir version

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Also lint migrations

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

Reset allow failure to false

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

priv/repo/migrations/20180430071244_remove_uri.exs

@@ -3,21 +3,21 @@ defmodule Mobilizon.Repo.Migrations.RemoveUri do
 
   def up do
     alter table("accounts") do
-      remove :uri
+      remove(:uri)
     end
 
     alter table("groups") do
-      remove :uri
+      remove(:uri)
     end
   end
 
   def down do
     alter table("accounts") do
-      add :uri, :string, null: false, default: "https://"
+      add(:uri, :string, null: false, default: "https://")
     end
 
     alter table("groups") do
-      add :uri, :string, null: false, default: "https://"
+      add(:uri, :string, null: false, default: "https://")
     end
   end
 end