Bigger buttons

In version 1.29.0, the buttons for a puzzle in play have been made bigger and are generally better proportioned. There are also some small fixes relating to play interaction. This version has gone live today.

The changes in detail:

• When playing a puzzle, the number buttons and game control buttons are usually bigger. This makes the buttons easier to hit or, more to the point, harder to miss. The change benefits all devices larger than an iPod, but devices with large screens (larger iPhones and iPads) benefit the most.
• A fix to ensure that all squares with pencil markings are changed to number squares when a sum value is tapped and two blocks are present.
• A fix to ensure that empty squares outside the blocks are changed to number squares when a sum value is tapped and the squares between the blocks already have values.
• A fix to prevent a pencil square with a single candidate value from being cleared unintentionally when double-tap is used to eliminate the same value from another square in the same row or column.