Rotate option for discrete target values skips first/last target value

[Benjamin Klum]

I think it's better to change the rotate option so that it always sets the target to its min or max value, no matter how big the step size is. Otherwise things get weird.

[Benjamin Klum]

re #127 Fix rotate option and make it more simple

... by always setting the target to its min or max value, no matter how big the step size is

→ <<cset 452b4bf60db7>>

[Benjamin Klum]

re #127 Align value to step size before checking rotation

Previously this was done afterwards which could lead to the phenomen that rotation was done too early.

→ <<cset f1fdc9573e2a>>