Django-oscar-eway

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* Add support for Oscar v0.7 and v0.8
* Add support for Django 1.7 when using Oscar 0.8. Earlier versions of Oscar
are not supported because Django 1.7 support is only available starting with
Oscar 0.8.

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* Add tests for migrations using PostgreSQL and MySQL databases on Travis
* Add a fix for MySQL when renaming tables in migration ``0004`` which fails
if constraints on the foreign keys are not dropped before renaming them. This is
details in ticket 466 for South: http://south.aeracode.org/ticket/466
* Fix dependency with Oscar's ``basket`` app in eway migration.
* Rename deprecated tables in migration due to PostgreSQL issue with uppercase
names.

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* Initial version of the project.