Hide private symbols in Python package.

I realized that the way I structured the pip package
in version 2.0.15 made the private symbols (those whose
names begin with an underscore) to be visible by the importer.
I reworked the package structure so this no longer happens.

This is now fixed in:
https://pypi.org/project/astronomy-engine/2.0.16/

source/python/.gitignore

@@ -1,4 +1,3 @@
 *.pyc
 astronomy_engine.egg-info/
 dist/
-astronomy/__init__.py

source/python/astronomy/.gitignore

@@ -0,0 +1 @@
+astronomy.py

source/python/astronomy/__init__.py

@@ -0,0 +1,7 @@
+# Astronomy Engine module initializer by Don Cross <cosinekitty@gmail.com>.
+
+# Pull Astronomy Engine's public symbols into module scope.
+from .astronomy import *
+
+# Delete the redundant nested module namespace.
+del astronomy

source/python/publish

@@ -1,7 +1,6 @@
 #!/bin/bash
-mkdir -pv astronomy || exit $?
-rm -f dist/* astronomy/*
-cp -v astronomy.py astronomy/__init__.py || exit $?
+rm -f dist/*
+cp -v astronomy.py astronomy/astronomy.py || exit $?
 python3 -m build || exit $?
 python3 -m twine upload --repository astronomy-engine dist/* || exit $?
 exit 0

source/python/setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name='astronomy-engine',
-    version='2.0.15',
+    version='2.0.16',
     description='Astronomy calculation for Sun, Moon, and planets.',
     long_description=open('README.md').read(),
     long_description_content_type='text/markdown',