The leaderboards update

Grid Twisters has finally received a long overdue update.

Feedback responses:

• There are leaderboards now, 10 of them in fact!
• The menu has been fixed and should work now. This makes the larger grid sizes readily accessible.
• You always select 3 tiles in a row from left to right. This is easier to understand and control. The possible moves are still the same.
• Something always happens when you request a hint. Before you only got a hint sometimes and other times nothing happened.
• The grids have been moved to a cooler environment.

Other changes:

• Added 4-way tiles.
• Made blank tiles slightly more common. Before they almost never occurred anywhere other than along the border.
• Added 8 new grid themes and made minor adjustments to the technology theme.
• Removed the menu background images to stay consistent with the new themes that don't have those.
• You get points for completing grids. These count both on the leaderboards and for unlocking grid themes.
• The plastic grid is January's free theme rotation.

Known bugs:

• Sometimes it only generates a few tiles instead of a complete grid. Then you have to open the menu and generate a new grid.