Release v1.0.9

NOTE: If upgrading from 1.0.7 or earlier, you will be required to configure your selected translation engine again after upgrading. Existing content will not be affected.

• Fix issue where upgrading from v1.0.7 or earlier to v1.0.8 would cause translation failure due to updating how the module stores configuration data. Credit to @jacmaes for finding and reporting. Resolves #5