[scale:exp] and [scale:log] behavior has changed and does not seem correct

[skraninger]

I am not sure if this is only in the IDE, but the slider scaling has changed to be much more skewed and not really usable.
For instance:
modFreq(j) = hslider("t:EchoMatrix/v:[1]Delays/h:[3]ModFreq/MF U%j[scale:exp][style:knob]", 0.05, 0.0, 10.0, 0.001) : si.smoo ;
Goes from 0 to 9 in the 1st (estimated) 1/20 of the range. This is not how it used to work.

[sletz]

@dariosanfilippo time for you to do a PR of your nice tension based general model for basics.lib library?