0.7.10

Added

• Walls: Place paths / walls by dragging (swipe across cells for paths, along edges for walls)
• Spokes: Additional difficulty level
• CrossNum puzzle

Changed

• Solo: Removed some presets, for better fit in the limited screen size
• Walls: Better error display (diagonal stripes)
• Cleaner screen layout by removing unnecessary 'force screen redraw' button from chooser and param screens
• Optimized screen update in game screen
• Games with pencil marks now arrange them in numerically fixed position.

Fixed

• Mosaic: Fix preservation of 'aggressiveness' parameter
• Solo: Disallow certain corner-case parameters to avoid hang on game generation