[Transformations Panel] For scaling, add the option to scale by specific height/width unit value

[Mark Zhu]

Currently, for the scaling tool in the Transform Panel, we enter a percentage value to define how much we would like it to scale. But it would be very useful to be able to enter a specific height/width unit value.

Currently, if we would like to, for example, make a shape vertically taller by 100 units, we need to calculate the percentage value or do it by trial and error.

Ideally, there would be 2 options:

• "by": scale it by a specific value. For example, make the shape 100 units taller vertically.
• "to": scale it to a specific value. For example, enlarge the shape to 600x400 units.

This is not available in RoboFont. But when we were still drawing shapes in RoboFont, we found it very useful to scale this way, so we made a script for it.