v1.7.8 - Yes again, read note

• Fix: Small calculation correction to selling cards
• Adjustment: During fusion mode, simply  clicking the card will add it to fusion pool
• Adjustment: Changed how the fusion pool button works, now once valid cards are selected, it will execute the fusion
• Fix: Was possible to bypass the number of fusion cards required by only having one of each in pool

Note, it's still v1.7.8 because I forgot to update version number.