changed multiple wheres to use where_in
fixes bug from when where_in was added
greatly reduces number of db queries when fetching a list of items
Merge pull request #1 from afk11/update_libraries

Updating Raw_transaction library, BitcoinLib, and added response message...
Starting to merge changes
Merge github.com:afk11/BitWasp
Merge github.com:afk11/BitWasp into merge_item_model_changes

Merging this back to master, in a roundabout way..
Merge pull request #29 from afk11/merge_item_model_changes

Merge item model changes