Version 3.3.4

Fix clone of retriever

Version 3.3.3

Add kwargs to retriever to allow for subclasses

Version 3.3.2

Fix for missing keys in row dict when writing to csv

Version 3.3.1

Don't infer types when writing csv

Version 3.3.0

Still trying to uniquify filenames from urls!

Version 3.2.9

Try to prevent more duplicate filenames when generating filenames from urls

Version 3.2.8

Add delete flag to retriever for whether to delete saved_dir

Version 3.2.7

New clone function in retriever

Version 3.2.6

Don't add test file prefix by default for retrievers

Version 3.2.5

Pass file_prefix
Get filename from query for urls with no path