Use src layout (#93)

This is more consistent to what is the current golden standard in packaging,
and followed by other plugins in the ecosystem.

Author: nicoddemus

pyproject.toml

@@ -0,0 +1,8 @@
+[build-system]
+requires = [
+  "setuptools",
+  "setuptools-scm[toml]>=6.2.3",
+]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]

pytest.ini

@@ -0,0 +1,3 @@
+[pytest]
+addopts = -ra
+testpaths = tests

setup.cfg

@@ -0,0 +1,41 @@
+[metadata]
+name = pytest-subtests
+description = unittest subTest() support and subtests fixture
+long_description = file: README.rst
+long_description_content_type = text/x-rst
+url = https://github.com/pytest-dev/pytest-subtests
+author = Bruno Oliveira
+license = MIT
+license_file = LICENSE
+classifiers =
+    Development Status :: 4 - Beta
+    Framework :: Pytest
+    Intended Audience :: Developers
+    Topic :: Software Development :: Testing
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
+    Programming Language :: Python :: Implementation :: CPython
+    Operating System :: OS Independent
+    License :: OSI Approved :: MIT License
+keywords = test, unittest, pytest
+
+[options]
+py_modules = pytest_subtests
+install_requires =
+    pytest>=7.0
+    attrs>=19.2.0
+python_requires = >=3.7
+package_dir =
+    =src
+setup_requires =
+    setuptools
+    setuptools-scm>=6.0
+
+[options.entry_points]
+pytest11 =
+    subtests = pytest_subtests