- Added Turkish translation, thanks to Süleyman Saltuk Güngör - Minor aesthetic changes for iOS 15

- Added Italian translation, thanks to Daniela, Isabella Eva and Davide Bigatti - Updated Japanese translation, thanks to Tom Sawada

- Supports Wide Color displays - Added Portuguese translation, thanks to Nuno Fernandes - Updated Spanish translation, thanks to Cristian Armendariz-Picon

- Launch-screen format satisfies new App Store requirement - Toolbar height adapts to default for iPhone or iPad

Added spaces in support of the 3rd edition of the book The Shape of Space (see www.crcpress.com/The-Shape-of-Space/Weeks/p/book/9781138061217 )

Updated for iOS 13

v 4.1 - Updated for iOS 11 and 12 - Faster tiling and culling algorithms - Ignores random vibrations when phone or tablet is lying still, to avoid needless animation and save energy v 4.1.1 - Added screenshots for iPad Pro (3rd Gen)

- Updated for iOS 11 and 12 - Faster tiling and culling algorithms - Ignores random vibrations when phone or tablet is lying still, to avoid needless animation and save energy