add py13 to tox envlist

upd Run tests section in README.

pyproject.toml

@@ -19,8 +19,8 @@ packages = [{ include = "voicemeeterlib" }]
 poethepoet = "^0.32.1"
 
 [tool.poetry.group.dev.dependencies]
-pytest = "^7.4.4"
-pytest-randomly = "^3.12.0"
+pytest = "^8.3.4"
+pytest-randomly = "^3.16.0"
 ruff = "^0.8.6"
 tox = "^4.23.2"
 virtualenv-pyenv = "^0.5.0"
@@ -37,39 +37,42 @@ levels.script = "scripts:ex_levels"
 midi.script = "scripts:ex_midi"
 obs.script = "scripts:ex_obs"
 observer.script = "scripts:ex_observer"
-test_basic.script = "scripts:test_basic"
-test_banana.script = "scripts:test_banana"
-test_potato.script = "scripts:test_potato"
-test_all.script = "scripts:test_all"
+test-basic.script = "scripts:test_basic"
+test-banana.script = "scripts:test_banana"
+test-potato.script = "scripts:test_potato"
+test-all.script = "scripts:test_all"
 
 [tool.tox]
 legacy_tox_ini = """
-[tox]
-envlist = py310,py311,py312
+    [tox]
+    envlist = py310,py311,py312,py313
 
-[testenv]
-passenv = *
-setenv = VIRTUALENV_DISCOVERY=pyenv
-allowlist_externals = poetry
-commands =
-  poetry install -v
-  poetry run pytest tests/
+    [testenv]
+    passenv = *
+    setenv = VIRTUALENV_DISCOVERY=pyenv
+    allowlist_externals = poetry
+    commands_pre =
+      poetry install --no-interaction --no-root
+    commands =
+      poetry run pytest tests
 
-[testenv:dsl]
-setenv = VIRTUALENV_DISCOVERY=pyenv
-allowlist_externals = poetry
-deps = pyparsing
-commands =
-  poetry install -v --without dev
-  poetry run python examples/dsl/
+    [testenv:dsl]
+    setenv = VIRTUALENV_DISCOVERY=pyenv
+    allowlist_externals = poetry
+    deps = pyparsing
+    commands_pre =
+      poetry install --no-interaction --no-root --without dev
+    commands =
+      poetry run python examples/dsl
 
-[testenv:obs]
-setenv = VIRTUALENV_DISCOVERY=pyenv
-allowlist_externals = poetry
-deps = obsws-python
-commands =
-  poetry install -v --without dev
-  poetry run python examples/obs/
+    [testenv:obs]
+    setenv = VIRTUALENV_DISCOVERY=pyenv
+    allowlist_externals = poetry
+    deps = obsws-python
+    commands_pre =
+      poetry install --no-interaction --no-root --without dev
+    commands =
+      poetry run python examples/obs
 """
 
 [tool.ruff]