Use correct versioning (#550)

Author: ianthomas23

ipympl/_version.py

@@ -1,3 +1,3 @@
-version_info = (0, 9, 3)
+version_info = (0, 9, 4, "dev", 1)
 __version__ = '.'.join(map(str, version_info))
 js_semver = '^0.11'

pyproject.toml

@@ -50,7 +50,9 @@ dependencies = [
     "traitlets<6",
 ]
 requires-python = ">=3.9"
-version = "0.9.4.dev1"
+dynamic = [
+    "version",
+]
 
 [project.optional-dependencies]
 docs = [
@@ -106,6 +108,10 @@ npm = ["jlpm"]
 [tool.hatch.build.hooks.jupyter-builder.editable-build-kwargs]
 npm = ["jlpm"]
 
+[tool.hatch.version]
+path = "ipympl/_version.py"
+source = "code"
+
 [tool.pytest.ini_options]
 testpaths = [
     "docs/examples",