Release of 1.4.2

Maintenance release

JSXGraph v1.4.2 is a patch release. It mainly fixes a code regression which prevented using JSXGraph on iOS versions below 13 and removes the 5 pixel bounding box of elements receiving focus in webkit browsers. Minor issues were beautifulScientificTickLabels for numbers with negative exponents and gradient fill colors for point elements. Further, the TypeScript definition file index.d.ts and keyboard control has been improved significantly.

Thanks to all contributors who have helped to improve JSXGraph!

Enjoy,

Matthias Ehmann, Michael Gerhäuser, Carsten Miller, Andreas Walter, and Alfred Wassermann