move to more standard project structure

Makefile

@@ -0,0 +1,17 @@
+all: lint
+
+.PHONY: lint
+lint:
+	flake8 --ignore=E501,W503
+
+.PHONY: release
+release:
+	python3 -m build
+	python3 -m twine upload dist/*
+
+clean:
+	find . -type f -name *.pyc -delete
+	find . -type d -name __pycache__ -delete
+	rm -rf build
+	rm -rf dist
+	rm -rf *.egg-info

pyproject.toml

@@ -0,0 +1,6 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "wheel"
+]
+build-backend = "setuptools.build_meta"

setup.cfg

@@ -0,0 +1,32 @@
+[metadata]
+name = sdm_modbus
+version = 0.4.4
+author = m,ale;
+author_email = 
+description = Eastron SDM Modbus parser library
+long_description = file: README.md
+long_description_content_type = text/markdown
+license = MIT License
+url = https://github.com/nmakel/sdm_modbus
+project_urls =
+    Bug Tracker = https://github.com/nmakel/sdm_modbus/issues
+classifiers =
+    Development Status :: 4 - Beta
+    Programming Language :: Python :: 3.7
+    Operating System :: OS Independent
+    Environment :: Console
+    Natural Language :: English
+    Intended Audience :: Developers
+    License :: OSI Approved :: MIT License
+
+[options]
+package_dir =
+    = src
+packages = find:
+include_package_data = True
+python_requires = >= 3.7
+install_requires =
+    pymodbus >= 2.3.0
+
+[options.packages.find]
+where = src

setup.py

@@ -2,32 +2,4 @@
 
 import setuptools
 
-
-with open("README.md", "r") as fh:
-    long_description = fh.read()
-
-setuptools.setup(
-    name="sdm_modbus",
-    version="0.4.4",
-    description="Eastron SDM Modbus parser library",
-    long_description=long_description,
-    long_description_content_type="text/markdown",
-    license="MIT License",
-    author="nmakel",
-    author_email="",
-    url="https://github.com/nmakel/sdm_modbus",
-    packages=["sdm_modbus"],
-    include_package_data=True,
-    install_requires=[
-        "pymodbus>=2.3.0"
-    ],
-    classifiers=[
-        "Development Status :: 4 - Beta",
-        "Programming Language :: Python :: 3.7",
-        "Operating System :: OS Independent",
-        "Environment :: Console",
-        "Natural Language :: English",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: MIT License"
-    ]
-)
+setuptools.setup()