django-prices-openexchangerates issues

Support update_exchange_rates --all for existed currency

Currently it will raise error when running ```update_exchange_rates --all``` if currency has already existed in db. It is because ```get_or_create(to_currency=currency, rate=rate)``` will break the uniquness of ```to_currency``` when rate changes....

jxltom

Conflicts between django-prices-openexchangerates and django

1

Hi, users are unable to run **_django-prices-openexchangerates_** due to dependency conflict with _**django**_ package. As shown in the following full dependency graph of **_django-prices-openexchangerates_**, **_django-prices-openexchangerates_** requires _**django >=1.11**_，while **_django-prices_** requires...

NeolithEra

Drop Python 3.4 and add Python 3.7

Currently, we're testing under Python 3.4 that is no longer supported by `mypy`.

patrys

Add ability to remove unsupported currencies

With the development of openexchangerates, some currencies in https://github.com/mirumee/django-prices-openexchangerates/blob/master/django_prices_openexchangerates/currencies.py may be abandoned in openchangerates. It would be nice to add an option to ```update_exchange_rates``` which could delete abandoned currencies from...

jxltom

Support verbosity for update_conversion_rates command

It will be nice to support django's built-in argument ```verbosity``` for ```update_exchange_rates``` command. With this PR, the default behevior of ```django-admin update_exchange_rates``` doesn't change, but ```django-admin update_exchange_rates --verbosity 0``` will...

jxltom