Update 1.1.0 is available, which includes the following:

Deck Editor Improvements
– New button to sort cards by cost/color vs. card Id
– New buttons to add/remove cards from the detailed card view
– New button that opens the new Deck Manager

Deck Manager
– Increased number of deck slots from 4 to 5
– Select a separate card back for each deck
– Name each deck
– Copy an existing deck to an open deck slot
– Delete a deck

Creature Attack Animations modified
– Tweaked the creature attack animations to make it more clear when the player receives damage