added rotation arg for labels

[lazarusA]

this allows to rotate barplot labels.

[ffreyer]

I think "label_rotation" would be a better name because all the other input attributes are just "label_attribute".

[lazarusA]

but, you also have
bar_labels = nothing
flip_labels_at

plus this also works for an array, i.e. a rotation for each label, hence labels_rotation. But, I'm happy with either as long as is available 😄, your call.

[jkrumbiegel]

I'm also for label_rotation

[lazarusA]

then label_rotation it is.

[SimonDanisch]

Thanks!

[Flausi]

Hey, I think the rotation function is great, but I think at the same time you should be able to change the orientation/alignment. Maybe in the style of label_align = (:left, :center).

If the attribute is already there, sorry. :)

[jkrumbiegel]

The align can probably be made automatic for most cases following the logic of Axis ticklabels.