add SPDX-License-Identifier and DCO information

this includes my personal signoff on the MAINTAINERS.md for DCO purposes

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

CONTRIBUTING.md

@@ -15,6 +15,39 @@ prioritization.
 
 ## Contributions
 
+### Sign Offs/Custody of Contributions
+
+I do not request the copyright of contributions be assigned to me or to the project, and I require no provision that I
+be allowed to relicense your contributions. My personal oath is to maintain inbound=outbound in my open source projects,
+and the expectation is authors are responsible for their contributions.
+
+I am following the the [Developer Certificate of Origin (DCO)](https://developercertificate.org/), also available at
+`DCO.txt`. The DCO is a way for contributors to certify that they wrote or otherwise have the right to license their
+code contributions to the project. Contributors must sign-off that they adhere to these requirements by adding a
+`Signed-off-by` line to their commit message, and/or, for frequent contributors, by signing off on their entry in
+`MAINTAINERS.md`.
+
+This process is followed by a number of open source projects, most notably the Linux kernel. Here's the gist of it:
+
+```
+[Your normal Git commit message here.]
+
+Signed-off-by: Random J Developer <random@developer.example.org>
+```
+
+`git help commit` has more info on adding this:
+
+```
+-s, --signoff
+    Add Signed-off-by line by the committer at the end of the commit log
+    message. The meaning of a signoff depends on the project, but it typically
+    certifies that committer has the rights to submit this work under the same
+    license and agrees to a Developer Certificate of Origin (see
+    http://developercertificate.org/ for more information).
+```
+
+### Submitting Contributions
+
 I don't expect contributors to sign up for my personal Gitea in order to send contributions, but it
 of course makes it easier. If you wish to go this route, please sign up at
 <https://git.incorporeal.org/bss/incorporeal-cms> and fork the project. People planning on
@@ -50,27 +83,3 @@ your change and to tell me how to pull your changes.
       formatting a good commit message.
     * Please make sure your Author contact information is stable, in case I need to reach you.
     * Consider cryptographically signing (`git commit -S`) your commits.
-
-### Custody of Contributions
-
-I do not request the copyright of contributions be assigned to me or to the project, and I require no
-provision that I be allowed to relicense your contributions. My personal oath is to maintain
-inbound=outbound in my open source projects, and the expectation is authors are responsible for their
-contributions.
-
-I am following the *spirit* of the [Developer Certificate of Origin](https://developercertificate.org/),
-but in a simplified fashion:
-
-By making a contribution to this project, you certify that:
-
-1. The contribution was created by you and you have the right to submit it under the open source license
-   indicated in the LICENSE file; or
-2. The contribution is based upon previous work that is covered under an appropriate open source license
-   compatible with the license indicated in the LICENSE file, and you have the right to contribute that
-   work with or without modifications, under the terms of that same open source license; or
-3. The contribution was provided directly to you by some other person who certified points 1, 2, or 3, and
-   you have not modified it.
-
-In the event of point 3, your commit **must** include the Signed-off-by line(s) as a chain of custody,
-via `git commit -s`. For points 1 and 2, your commit with accurate Author information doubles as direct
-custody.

DCO.txt

@@ -0,0 +1,34 @@
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.

MAINTAINERS.md

@@ -0,0 +1,10 @@
+# Maintainers
+
+This file contains information about people permitted to make major decisions and direction on the project.
+
+## Contributing Under the DCO
+
+By adding your name and email address to this section, you certify that all of your subsequent contributions to
+incorporeal-cms are made under the terms of the Developer's Certificate of Origin 1.1, available at `DCO.txt`.
+
+* Brian S. Stephan (<bss@incorporeal.org>)

incorporealcms/__init__.py

@@ -1,4 +1,7 @@
-"""An application for running my Markdown-based sites."""
+"""An application for running my Markdown-based sites.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import logging
 import os
 from logging.config import dictConfig

incorporealcms/config.py

@@ -1,4 +1,7 @@
-"""Default configuration."""
+"""Default configuration.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 
 
 class Config(object):

incorporealcms/error_pages.py

@@ -1,4 +1,7 @@
-"""Error page views for 400, 404, etc."""
+"""Error page views for 400, 404, etc.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 from incorporealcms.lib import render
 
 

incorporealcms/lib.py

@@ -1,4 +1,7 @@
-"""Miscellaneous helper functions and whatnot."""
+"""Miscellaneous helper functions and whatnot.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import logging
 
 import markdown

incorporealcms/mdx/__init__.py

@@ -1 +1,4 @@
-"""Markdown extensions."""
+"""Markdown extensions.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""

incorporealcms/mdx/figures.py

@@ -1,4 +1,7 @@
-"""Create generic figures with captions."""
+"""Create generic figures with captions.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import re
 from xml.etree.ElementTree import SubElement
 

incorporealcms/mdx/pydot.py

@@ -1,4 +1,7 @@
-"""Serve dot diagrams inline."""
+"""Serve dot diagrams inline.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import base64
 import logging
 import re

incorporealcms/pages.py

@@ -1,4 +1,7 @@
-"""General page functionality."""
+"""General page functionality.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import datetime
 import logging
 import os

setup.py

@@ -1,4 +1,7 @@
-"""Setuptools configuration."""
+"""Setuptools configuration.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import os
 
 from setuptools import find_packages, setup

tests/conftest.py

@@ -1,4 +1,7 @@
-"""Create the test app and other fixtures."""
+"""Create the test app and other fixtures.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import os
 
 import pytest

tests/functional_markdown_tests.py

@@ -1,4 +1,7 @@
-"""Test graphviz functionality."""
+"""Test graphviz functionality.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import os
 
 from incorporealcms import create_app

tests/functional_tests.py

@@ -1,4 +1,7 @@
-"""Test page requests."""
+"""Test page requests.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import re
 from unittest.mock import patch
 

tests/instance/config.py

@@ -1,4 +1,7 @@
-"""Configure the test application."""
+"""Configure the test application.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 
 LOGGING = {
     'version': 1,

tests/test_factory.py

@@ -1,4 +1,7 @@
-"""Test basic configuration stuff."""
+"""Test basic configuration stuff.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import os
 
 from incorporealcms import create_app

tests/test_pages.py

@@ -1,4 +1,7 @@
-"""Unit test helper methods."""
+"""Unit test helper methods.
+
+SPDX-License-Identifier: AGPL-3.0-or-later
+"""
 import os
 
 import pytest