git_item using new API
get_item output fixes
fix error_handling_tests
convert batch_get_item
convert batch_write_item
convert create_table
convert delete_item
convert delete_table
convert describe_table
convert list_tables
convert put_item
convert query
convert scan
convert update_item
convert UpdateTable
Fix UpdateItem with no AttributeUpdates (which is allowed and will create an item with just the key)
Add key conditions as required conditions to Query because they are, despite what the doc says
change keys to be a list becuase index keys can have three elements
Set eq as default key condition
Support old and new ddb API side by side:
erlcloud_ddb - old API
erlcloud_ddb1 - old low level api
erlcloud_ddb2 - new API
erlcloud_ddb_impl - shared request logic
erlcloud_ddb_util - higher level utilities