adding pyproject.toml, for all the good that will do anyone

pyproject.toml

@@ -0,0 +1,37 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "apple410"
+version = "0.1.0"
+description = "A library for controlling the Apple 410 Color Plotter"
+requires_python = ">=3"
+authors = [
+    { name = "Adam Mayer", email = "phooky@gmail.com" },
+]
+license = "MIT"
+license-files = [ "LICENSE" ]
+dependencies = [ "pyserial" ]
+keywords = "plotter apple410 retrocomputing"
+classifiers=[
+    'Development Status :: 3 - Alpha',
+    'Intended Audience :: Developers',
+    'Topic :: Printing',
+    'License :: OSI Approved :: MIT License',
+    'Programming Language :: Python :: 3',
+    'Programming Language :: Python :: 3.3',
+    'Programming Language :: Python :: 3.4',
+    'Programming Language :: Python :: 3.5',
+]
+
+[project.scripts]
+apple410 = "apple410.cmdline:main"
+a410svg2plot = "apple410.cmdline:svg2plot"
+a410plot2svg = "apple410.cmdline:plot2svg"
+a410plot2png = "apple410.cmdline:plot2png"
+
+
+[project.urls]
+Homepage = "https://github.com/nycresistor/Apple410"
+Issues = "https://github.com/nycresistor/Apple410/issues"