Modified settings to be consistent with the new name.
Fixed bugs in error reporting.
Renamed instance as context.
Added tests for Importer.
Removed `model`. It is not used any more.
Fixed issues where file_info wasn't renamed.
Renamed data fixtures.
Added awesome fixtures to a mock module.

BONUS: They also act like file contexts!
Added tests for Loader.
Added ExcelLoader tests
Added testing for the SpreadSheetImporter.
Added test for process without sheets.
Added case for error when unknown data is proivded.
Added test for different possible variations of get_sheet_list.
Added test for providing explicit types.
Fixed case where unknown string is provided for loaders.
Well, that was not necessary.
Added test ensuring that parsing sheets without extending breaks.
Added a test_suite which does nothing because Django testing is a mess.
Added dependencies.