README and license updates

Author: jcarbaugh

README.md

@@ -1,39 +1,30 @@
-Django Add Default Value for PostgreSQL
-=======================================
+# Django Add Default Value for PostgreSQL
 
 Django Migration Operation that can be used to transfer a field's default value
 to the database scheme.
 
 Based on [django-add-default-value](https://github.com/3YOURMIND/django-add-default-value/) by [3YOURMIND](https://github.com/3YOURMIND). This variant drops support for other databases, specifically the Azure ODBC driver which does not support current versions of Django.
 
 
-
+[![CI](https://github.com/Mariana-Tek/django-add-default-value-postgresql/workflows/Python%20package/badge.svg)](https://github.com/Mariana-Tek/django-add-default-value-postgresql/actions?query=workflow%3A%22Python+package%22)
 [![PyPi](https://img.shields.io/pypi/v/django-add-default-value-postgresql.svg?branch=master)](https://pypi.python.org/pypi/django-add-default-value-postgresql/)
 [![License](https://img.shields.io/github/license/Mariana-Tek/django-add-default-value-postgresql.svg)](./LICENSE)
 
-[![CI](https://github.com/Mariana-Tek/django-add-default-value-postgresql/workflows/Python%20package/badge.svg)](https://github.com/Mariana-Tek/django-add-default-value-postgresql/actions?query=workflow%3A%22Python+package%22)
-
 
-
-
-Dependencies
-------------
+## Dependencies
 
 * Python 3.6, 3.7, or 3.8
 * Django 2.2 or 3.0
 
 
+## Installation
 
-
-Installation
-------------
 `pip install django-add-default-value-postgresql`
 
 You can then use ``AddDefaultValue`` in your migration file to transfer the default
 values to your database. Afterwards, it's just the usual ``./manage.py migrate``.
 
-Usage
------
+## Usage
 
 Add this manually to an autogenerated Migration that adds a new field:
 
@@ -85,9 +76,14 @@ You can test against multiple versions of Django using `tox`. To test across Pyt
 
 
 
-License
--------
+## License
 
 ``django-add-default-value-postgresql`` is released under the Apache 2.0 License.
 
+### Changes from original source
 
+* removed MySQL-related code
+* removed MSSQL-related code
+* added allow_migrate_model check on database_forwards and database_backwards
+* added support for Python 3.7 and 3.8, dropped support for <3.6
+* added support for Django 2.2 and 3.0, dropped support for <2.2

django_add_default_value/__init__.py

@@ -1,16 +1,16 @@
 # Copyright 2020 Mariana Tek
 # Copyright 2018 3YOURMIND GmbH
-
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
-
+#
 # http://www.apache.org/licenses/LICENSE-2.0
-
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+# or implied. See the License for the specific language governing
+# permissions and limitations under the License.
 
 from .add_default_value import *  # noqa

django_add_default_value/add_default_value.py

@@ -1,16 +1,18 @@
 # Copyright 2020 Mariana Tek
 # Copyright 2018 3YOURMIND GmbH
-
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
-
+#
 # http://www.apache.org/licenses/LICENSE-2.0
-
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+# or implied. See the License for the specific language governing
+# permissions and limitations under the License.
+
 import django
 from django.db.migrations.operations.base import Operation
 from django.db import models

setup.py

@@ -1,17 +1,17 @@
 # Copyright 2020 Mariana Tek
 # Copyright 2018 3YOURMIND GmbH
-
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
-
+#
 # http://www.apache.org/licenses/LICENSE-2.0
-
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+# or implied. See the License for the specific language governing
+# permissions and limitations under the License.
 
 from setuptools import setup