Module renaming

Use blendfile for the library
Use blender-file for the module (pip install blender-file)

setup.py

@@ -1,14 +1,14 @@
 from setuptools import setup
 
 setup(
-    name='blender_file',
+    name='blender-file',
     version='1.0',
     description='Blender File',
     url='https://developer.blender.org/diffusion/BBF/',
     author='At Mind B.V. - Jeroen Bakker, Blender Foundation - Campbell Barton',
     author_email='foundation@blender.org',
     license='GNU General Public License v2 or later (GPLv2+)',
-    packages=['blender_file'],
+    packages=setuptools.find_packages('.', exclude=['tests']),
     tests_require=[
         'pytest',
     ],