move build backend to flit

Author: Carreau

pyproject.toml

@@ -1,12 +1,12 @@
 [build-system]
-build-backend = "setuptools.build_meta"
-requires = ["setuptools"]
+build-backend = "flit_core.buildapi"
+requires = ["flit_core>=3.2"]
 
 [project]
 name = "matplotlib-inline"
 description = "Inline Matplotlib backend for Jupyter"
 authors = [
-    {name = "IPython Development Team", email = "[email protected]"},
+    { name = "IPython Development Team", email = "[email protected]" },
 ]
 classifiers = [
     "Development Status :: 5 - Production/Stable",
@@ -29,13 +29,8 @@ classifiers = [
 ]
 dependencies = ["traitlets"]
 dynamic = ["version"]
-keywords = [
-    "ipython",
-    "jupyter",
-    "matplotlib",
-    "python",
-]
-license = {file = "LICENSE"}
+keywords = ["ipython", "jupyter", "matplotlib", "python"]
+license = { file = "LICENSE" }
 readme = "README.md"
 requires-python = ">=3.8"
 
@@ -46,4 +41,4 @@ inline = "matplotlib_inline.backend_inline"
 Homepage = "https://github.com/ipython/matplotlib-inline"
 
 [tool.setuptools.dynamic]
-version = {attr = "matplotlib_inline.__version__"}
+version = { attr = "matplotlib_inline.__version__" }