Remove credo and use mix format, and lint everything

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

config/config.exs

@@ -24,8 +24,7 @@ config :eventos, EventosWeb.Endpoint,
   url: [host: "localhost"],
   secret_key_base: "1yOazsoE0Wqu4kXk3uC5gu3jDbShOimTCzyFL3OjCdBmOXMyHX87Qmf3+Tu9s0iM",
   render_errors: [view: EventosWeb.ErrorView, accepts: ~w(html json)],
-  pubsub: [name: Eventos.PubSub,
-           adapter: Phoenix.PubSub.PG2],
+  pubsub: [name: Eventos.PubSub, adapter: Phoenix.PubSub.PG2],
   instance: "localhost",
   email_from: "noreply@localhost",
   email_to: "noreply@localhost"
@@ -37,23 +36,26 @@ config :logger, :console,
 
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
-import_config "#{Mix.env}.exs"
+import_config "#{Mix.env()}.exs"
 
 config :eventos, EventosWeb.Guardian,
-       issuer: "eventos",
-       secret_key: "ty0WM7YBE3ojvxoUQxo8AERrNpfbXnIJ82ovkPdqbUFw31T5LcK8wGjaOiReVQjo"
+  issuer: "eventos",
+  secret_key: "ty0WM7YBE3ojvxoUQxo8AERrNpfbXnIJ82ovkPdqbUFw31T5LcK8wGjaOiReVQjo"
 
 config :guardian, Guardian.DB,
-       repo: Eventos.Repo,
-       schema_name: "guardian_tokens", # default
-       token_types: ["refresh_token"], # store all token types if not set
-       sweep_interval: 60 # default: 60 minutes
+  repo: Eventos.Repo,
+  # default
+  schema_name: "guardian_tokens",
+  # store all token types if not set
+  token_types: ["refresh_token"],
+  # default: 60 minutes
+  sweep_interval: 60
 
 config :geolix,
-       databases: [
-         %{
-           id: :city,
-           adapter: Geolix.Adapter.MMDB2,
-           source: System.get_env("GEOLITE_CITIES_PATH") || "priv/static/GeoLite2-City.mmdb"
-         }
-       ]
+  databases: [
+    %{
+      id: :city,
+      adapter: Geolix.Adapter.MMDB2,
+      source: System.get_env("GEOLITE_CITIES_PATH") || "priv/static/GeoLite2-City.mmdb"
+    }
+  ]