fix read the docs

.readthedocs.yml

@@ -0,0 +1,10 @@
+version: 2
+formats:
+  - pdf
+  - epub
+python:
+  version: 3.7
+  install:
+     - requirements: doc/requirements.txt
+     - method: setuptools
+       path: .

CHANGELOG.rst

@@ -1,22 +1,6 @@
 *********
 Changelog
 *********
-2019-06-19 - Version 3.0a6 - "Mistake not..."
----------------------------------------------
-This release is the seventh alpha release of the new version 3.0.
-Please be aware the the API is subject to change until v3.0 is
-released.
-
-changes
-^^^^^^^
-- fix inclusion of the capabilities-file
-- execute CI jobs also on Windows and macOS-targets
-- improve documentation
-
-contributors
-^^^^^^^^^^^^
-- Patrick Kanzler
-
 2019-06-16 - Version 3.0a5 - "Lightly Seared On The Reality Grill"
 ------------------------------------------------------------------
 This release is the sixth alpha release of the new version 3.0. Please

MANIFEST.in

@@ -1,5 +1,6 @@
 include *.rst
 include *.txt
+include COPYING
 include LICENSE
 include INSTALL
 include tox.ini

readthedocs.yml

@@ -1,7 +0,0 @@
-formats:
-  - pdf
-  - epub
-requirements_file: doc/requirements.txt
-python:
-  version: 2
-  setup_py_install: true

setup.py

@@ -56,7 +56,7 @@ setup(
     platforms='any',
     package_dir={"": "src"},
     packages=find_packages(where="src", exclude=["tests", "tests.*"]),
-    package_data={'escpos': ['capabilities.json']},
+    package_data={'': ['COPYING', 'src/escpos/capabilities.json']},
     include_package_data=True,
     classifiers=[
         'Development Status :: 4 - Beta',