Add image field
give card_id for each reprint because image field is messed up
originally there were tuples
extra field: printings with card ids
small fix - remove unused code
reworked extended printings to contain dictionary instead of list; added full printings info to single card renderer; version bump; PEP8
a little formatting
Merge pull request #18 from dekoza/feat/add_img_field

Add image field