update pyproject.toml metadata

pyproject.toml

@@ -4,8 +4,10 @@ build-backend = "hatchling.build"
 
 [project]
 name = "widget-bandsplot"
+description = 'A Jupyter widget to plot band structure and density of states.'
 version = "0.7.1"
 dependencies = ["anywidget~=0.9.10"]
+authors = [{ name = "The OSSCAR team" }]
 readme = "README.md"
 keywords = [
   'jupyter',
@@ -16,9 +18,23 @@ keywords = [
   'electronic-structure',
   'phonons',
 ]
+classifiers = [
+  'Development Status :: 5 - Production/Stable',
+  'Programming Language :: Python',
+  'Programming Language :: Python :: 3.9',
+  'Programming Language :: Python :: 3.10',
+  'Programming Language :: Python :: 3.11',
+  'Topic :: Scientific/Engineering',
+]
+license = { file = 'LICENSE.txt' }
+requires-python = '>=3.9'
+
+[project.urls]
+Home = 'https://www.osscar.org/'
+Source = 'https://github.com/osscar-org/widget-bandsplot'
 
 [project.optional-dependencies]
-dev = ["watchfiles", "jupyterlab", "bumpver==2023.1129"]
+dev = ["watchfiles", "jupyterlab", "notebook", "bumpver>=2023.1129"]
 
 # automatically add the dev feature to the default env (e.g., hatch shell)
 [tool.hatch.envs.default]