authors can now preset a recommended calculator visibility. Teachers can choose to follow that setting (default) or overwrite it with a calculator setting on class level.
practice tests have a stop button to return to the home screen.
Technical notes and bug fixes
in test notes and essay input fields, the formula editor settings now allow a wider range of expressions. Also, the formula editor settings of the exercise are restored when returning from these html input fields.
we now strike through expired products
we've adjusted eval numeric when used with trigonometric functions to force the values to floats
we've fixed a rounding bug for exercise type financial statement item