Put all blog post related fields in its own dict. 'image_id' -> 'id' 'post_id' -> 'post[id]' 'title' -> 'post[title]' etc ...
allow https:// as well as http://
- 'post_id' and 'image_id' are only unique per user - /image/ pages only show a maximum of 24 images, but there can be more images than that in a blog post - let extraction run in its own thread and maybe improve speed - #190