Use dynamic version

pretalx_broadcast_tools/__init__.py

@@ -0,0 +1 @@
+__version__ = "2.2.0"

pretalx_broadcast_tools/apps.py

@@ -1,5 +1,6 @@
 from django.apps import AppConfig
 from django.utils.translation import gettext_lazy
+from pretalx_broadcast_tools import __version__
 
 
 class PluginApp(AppConfig):
@@ -15,7 +16,7 @@ class PluginApp(AppConfig):
             "embedded into your broadcasting software"
         )
         visible = True
-        version = "2.2.0"
+        version = __version__
         category = "FEATURE"
 
     def ready(self):

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pretalx-broadcast-tools"
-version = "2.2.0"
+dynamic = ["version"]
 description = """
 Some tools which can be used for supporting a broadcasting software.
 This currently includes a generator for PDF printouts, a 'lower thirds'
@@ -35,5 +35,8 @@ repository = "https://github.com/Kunsi/pretalx-plugin-broadcast-tools.git"
 [tool.setuptools]
 include-package-data = true
 
+[tool.setuptools.dynamic]
+version = {attr = "pretalx_broadcast_tools.__version__"}
+
 [tool.setuptools.packages.find]
 include = ["pretalx*"]