Allow subscribing to all_tables

README.md

@@ -148,6 +148,16 @@ config :my_app, WalEx,
   name: MyApp
 ```
 
+If you would like to subscribe to all tables, you can pass a special atom to subscriptions.
+
+```elixir
+config :my_app, WalEx,
+  url: "postgres://username:password@hostname:port/database",
+  publication: "events",
+  subscriptions: [:all_tables],
+  name: MyApp,
+```
+
 You can also dynamically update the config at runtime:
 
 ```elixir

lib/walex/transaction_filter.ex

@@ -157,7 +157,7 @@ defmodule WalEx.TransactionFilter do
   def subscribes?(%{table: table}, app_name) do
     subscriptions = WalEx.Config.get_configs(app_name, :subscriptions)
 
-    table in subscriptions
+    :all_tables in subscriptions || table in subscriptions
   end
 
   def has_table?(%{table: table}, table_name) when is_atom(table), do: table == table_name