This is a long overdue release with mainly bug fixes such as the following:

- Sometimes parts of a graph became invisible (especially
`sqrt`

and`ln`

functions). These are fixed now. - There were rounding issues with certain kind of numeric computations. One example is
`10.02-10.01`

. It produced a slightly off value (0.00999…) as Java’s builtin arithmetic operations are not accurate enough. Now the results are rounded and the output is the correct value.

The release also has a new feature – double factorials. Double factorials (wikipedia) are like factorials but only multiply odd/even numbers. Examples: `6!!=2*4*6=48`

or `5!!=1*3*5=15`