Refactor testing module into a package.

Author: domdfcoding

__pkginfo__.py

@@ -32,6 +32,6 @@
 install_requires = (repo_root / "requirements.txt").read_text(encoding="utf-8").split('\n')
 extras_require = {
 		"dates": ["pytz>=2019.1"],
-		"testing": ["pytest>=6.0.0", "pytest-regressions>=2.0.2"],
-		"all": ["pytest-regressions>=2.0.2", "pytest>=6.0.0", "pytz>=2019.1"]
+		"testing": ["pytest>=6.2.0", "pytest-regressions>=2.0.2"],
+		"all": ["pytest-regressions>=2.0.2", "pytest>=6.2.0", "pytz>=2019.1"]
 		}