Just added a dev branch

.replit

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+run = "python3 app.py"
+
+# The primary language of the repl. There can be others, though!
+language = "python3"
+# A list of globs that specify which files and directories should
+# be hidden in the workspace.
+hidden = ["venv", ".config", "**/__pycache__", "**/.mypy_cache", "**/*.pyc"]
+
+# Specifies which nix channel to use when building the environment.
+[nix]
+channel = "stable-22_11"
+
+[env]
+VIRTUAL_ENV = "/home/runner/${REPL_SLUG}/venv"
+PATH = "${VIRTUAL_ENV}/bin"
+PYTHONPATH = "${VIRTUAL_ENV}/lib/python3.10/site-packages"
+REPLIT_POETRY_PYPI_REPOSITORY = "https://package-proxy.replit.com/pypi/"
+MPLBACKEND = "TkAgg"
+POETRY_CACHE_DIR = "${HOME}/${REPL_SLUG}/.cache/pypoetry"
+
+# Enable unit tests. This is only supported for a few languages.
+[unitTest]
+language = "python3"
+
+# Add a debugger!
+[debugger]
+support = true
+
+  # How to start the debugger.
+  [debugger.interactive]
+  transport = "localhost:0"
+  startCommand = ["dap-python", "main.py"]
+
+    # How to communicate with the debugger.
+    [debugger.interactive.integratedAdapter]
+    dapTcpAddress = "localhost:0"
+
+    # How to tell the debugger to start a debugging session.
+    [debugger.interactive.initializeMessage]
+    command = "initialize"
+    type = "request"
+
+      [debugger.interactive.initializeMessage.arguments]
+      adapterID = "debugpy"
+      clientID = "replit"
+      clientName = "replit.com"
+      columnsStartAt1 = true
+      linesStartAt1 = true
+      locale = "en-us"
+      pathFormat = "path"
+      supportsInvalidatedEvent = true
+      supportsProgressReporting = true
+      supportsRunInTerminalRequest = true
+      supportsVariablePaging = true
+      supportsVariableType = true
+
+    # How to tell the debugger to start the debuggee application.
+    [debugger.interactive.launchMessage]
+    command = "attach"
+    type = "request"
+
+      [debugger.interactive.launchMessage.arguments]
+      logging = {}
+
+# Configures the packager.
+[packager]
+language = "python3"
+ignoredPackages = ["unit_tests"]
+
+  [packager.features]
+  enabledForHosting = false
+  # Enable searching packages from the sidebar.
+  packageSearch = true
+  # Enable guessing what packages are needed from the code.
+  guessImports = true
+
+# These are the files that need to be preserved when this 
+# language template is used as the base language template
+# for Python repos imported from GitHub
+[gitHubImport]
+requiredFiles = [".replit", "replit.nix", ".config", "venv"]
+
+[languages]
+
+[languages.python3]
+pattern = "**/*.py"
+
+[languages.python3.languageServer]
+start = "pylsp"