#3 Tab across outcomes in extensive games

[Ted Turocy]

Suggested feature. I typically make the tree structure first, and then
at the end, fill out the payoffs. I click on the top leaf node and fill in
the payoff information, using "Tab" to move between payoffs for each
player. After filling the payoffs for all the players at that leaf node,
it would be nice to be able to "Tab" to the next leaf node's payoff
textboxes, like how "Tab" in a spreadsheet or table will move you to the
next line to fill out once at the end of the current line. It would save
time from having to then move to the mouse, and double click the next leaf
node's payoff area.