Change license of all GPLv3 files to MPL-2.0

https://github.com/jbarlow83/OCRmyPDF/issues/600

docs/contributing.rst

@@ -32,7 +32,8 @@ If you are proposing a change that will require a new Python dependency, we
 prefer dependencies that are already packaged by Debian or Red Hat. This makes
 life much easier for our downstream package maintainers.
 
-Python dependencies must also be GPLv3 compatible.
+Python dependencies must also be license-compatible. GPLv3 or AGPLv3 are likely
+incompatible with the project's license, but LGPLv3 is compatible.
 
 New non-Python dependencies
 ===========================
@@ -55,3 +56,12 @@ of that platform.
 
 Packager maintainers, please ensure that the command line completion scripts in
 ``misc/`` are installed.
+
+Copyright and license
+=====================
+
+For contributions over 10 lines of code, please include your name to list of
+copyright holders for that file. The core program is licensed under MPL-2.0,
+test files and documentation under CC-BY-SA 4.0, and miscellaneous files under
+MIT. Please contribute code only that you wrote and you have the permission to
+contribute or license to us.

docs/docker.rst

@@ -163,8 +163,7 @@ complete. This may entail setting a long timeout; this interface is more
 useful for internal HTTP API calls.
 
 Unlike the rest of OCRmyPDF, this web service is licensed under the
-Affero GPLv3 (AGPLv3) since Ghostscript, a dependency of OCRmyPDF, is
-also licensed in this way.
+Affero GPLv3 (AGPLv3) since Ghostscript is also licensed in this way.
 
 In addition to the above, please read our
 :ref:`general remarks on using OCRmyPDF as a service <ocr-service>`.

docs/pdfsecurity.rst

@@ -64,7 +64,7 @@ malicious user could upload a chosen PDF. In particular, it is not
 necessarily secure against PDF malware or PDFs that cause denial of
 service. OCRmyPDF relies on Ghostscript, and therefore, if deployed
 online one should be prepared to comply with Ghostscript's Affero GPL
-license, OCRmyPDF's GPL license, and any other licenses.
+license, and any other licenses.
 
 Setting aside these concerns, a side effect of OCRmyPDF is it may
 incidentally sanitize PDFs that contain certain types of malware. It

docs/release_notes.rst

@@ -12,14 +12,10 @@ may be unreliable. Use the API to depend on precise behavior.
 The public API may be useful in scripts that launch OCRmyPDF processes or that
 wish to use some of its features for working with PDFs.
 
-Note that it is licensed under GPLv3, so scripts that
-``import ocrmypdf`` and are released publicly should probably also be
-licensed under GPLv3.
-
 v10.3.1
 =======
 
--  Fixed a number of test suite failures with pdfminer.six older than veresion 20200420.
+-  Fixed a number of test suite failures with pdfminer.six older than veresion 20200402.
 -  Enabled support for pdfminer.six 20200720.
 
 v10.3.0
@@ -362,7 +358,7 @@ v9.0.0
 
 -  Added a high level API for applications that want to integrate OCRmyPDF.
    Special thanks to Martin Wind (@mawi1988) whose made significant contributions
-   to this effort. OCRmyPDF is GPLv3-licensed.
+   to this effort.
 -  Added progress bars for long-running steps. ■■■■■■■□□
 -  We now create linearized ("fast web view") PDFs by default. The new parameter
    ``--fast-web-view`` provides control over when this feature is applied.
@@ -989,8 +985,8 @@ v6.1.0
 v6.0.0
 ======
 
--  The software license has been changed to GPLv3. Test resource files
-   and some individual sources may have other licenses.
+-  The software license has been changed to GPLv3 [it has since changed again].
+   Test resource files and some individual sources may have other licenses.
 -  OCRmyPDF now depends on
    `PyMuPDF <https://pymupdf.readthedocs.io/en/latest/installation/>`__.
    Including PyMuPDF is the primary reason for the change to GPLv3.