refactor: get rid of umbrella

.formatter.exs

@@ -1,5 +1,4 @@
 # Used by "mix format"
 [
-  inputs: ["mix.exs", "config/*.exs", "example.exs"],
-  subdirectories: ["apps/*"]
+  inputs: ["mix.exs", "example.exs", "{config,lib,test}/**/*.{ex,exs}", ".formatter.exs"]
 ]

.github/workflows/nightly-integration.yml

@@ -10,9 +10,6 @@ jobs:
   integration_test:
     name: Integration Tests
     runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: ./apps/main_app
     env:
       MIX_ENV: test
     strategy:

.gitignore

@@ -24,3 +24,6 @@ erl_crash.dump
 
 # expert LSP
 .expert/
+
+# elixir LSP
+.elixir_ls/

README.md

@@ -11,22 +11,22 @@ Either start the application with iex console:
 iex -S mix run --no-halt
 ```
 
-Or use [example.exs](./example.exs) script to quickly startup PgSubscriber with FilePublisher:
+Or use [example.exs](./example.exs) script to quickly startup Subscribers.Postgres with Publishers.File:
 ```bash
 iex -S mix run example.exs
 ```
 
-`PgSubscriber` requires running Postgres database. Checkout [postgres example](./apps/pg_subscriber/example/) for a quick setup.
-Make sure that `FilePublisher` points to the existing location of your system (file does not need to exist, but parent
+`Subscribers.Postgres` requires running Postgres database. Checkout [postgres example](./apps/pg_subscriber/example/) for a quick setup.
+Make sure that `Publishers.File` points to the existing location of your system (file does not need to exist, but parent
 directories must).
 
 Finally, connect to a subscriber and execute INSERT/UPDATE/DELETE statement. The statement will be logged and saved by all
 publishers (in case of
-FilePublisher the statement is saved to a file).
+Publishers.File the statement is saved to a file).
 
 ## Subscribers
 
-### PgSubscriber :rocket:
+### Subscribers.Postgres :rocket:
 Subscriber for Postgres database. The subscriber creates logical replication connection to Postgres database. The replication
 connection makes database to push replication messages to the subscriber (push-based communication).
 
@@ -52,7 +52,7 @@ connection makes database to push replication messages to the subscriber (push-b
 
 ## Publishers
 
-### FilePublisher :rocket:
+### Publishers.File :rocket:
 Publisher storing replication messages to files.
 
 #### Features