Django-extensions

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Changes:

- Fix: sqldiff, previous Django 1.8 fix was slightly broken

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Changes:

- Improvement: syncdata, add skip-remove option
- Improvement: logging, report how often mail was ratelimited
- Fix: admin, Django 1.8 compatibility module_name is now called model_name
- Fix: notes, Python 3.x fix force output of filter into list
- Fix: sqldiff, fix for Django 1.8

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Changes:

- New: ratelimiter, a simple ratelimiter filter for Python logging
- Fix: various improvements for Django 1.8
- Fix: sync_s3, use os.walk instead of os.path.walk (py3 fix)
- Improvement: pipchecker, use name instead of url_name to fix casing mismatches
- Improvement: pipchecker, use https
- Improvement: pipchecker, fix issues with new(er) pip versions
- Docs: fixed a few typos
- Docs: added documentation about NOTEBOOK_ARGUMENTS settings

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Changes:

- New: sqldsn, prints Data Source Name for defined database(s)
- Fix: graph_models, Django 1.8 support
- Fix: highlighting tag, fix usage of is_safe
- Fix: runscript, fix for runscript with AppConfig apps
- Fix: sqldiff, KeyError when index is missing in database
- Fix: sqldiff, multi column indexes was also counted as a single colomn index
- Improvements: JSONField, Added try/catch for importing json/simplejson for Django 1.7

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Changes:

- New: runserver_plus, add support for --extra-files parameter
- Fix: Django 1.7 defined MIDDLEWARE_CLASSES for tests
- Fix: shell_plus, problem when auto-loading modules with empty '__module__' property
- Improvement: shell_plus, IPython 3.x support for notebooks
- Improvement: tests, move to py.test and lots of other improvements
- Improvement: create_app, add migrations folder
- Improvement: tox.ini, refactored to be more DRY
- Improvement: runserver_plus, also reload on changes to translation files
- Improvement: runserver_plus, add reloader_interval support
- Improvement: create_template_tags, removed unused command line option
- Docs: print_user_for_session, add note about SESSION_ENGINE
- Docs: runserver_plus, added section about IO calls and CPU usage

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Changes:

- Fix: various fixes for Django 1.8
- Improvement: shell_plus, autodetect vi mode by looking at $EDITOR shell env setting
- Improvement: shell_plus, print which shell is being used at verbosity > 1
- Improvement: shell_plus, added --no-browser option for IPython notebooks
- Improvement: tox.ini, updated to latest Django versions
- Docs: add reference to JSONField in documentation
- Docs: fixed various typo's and links in docs and changelog
- Docs: added some basic use cases to README
- Docs: added information for companies or people wanting to donate towards the project
- Fix: graphmodels, fix for python3
- Fix: dumpscript, fix check for missing import_helper module in Python 3
- Fix: runprofileserver, explicitly close file to avoid error on windows
- Fix: json field, migration issues when adding new JSONField to existing model
- Fix: runjobs, fix python3 issues