You can rotate by 1 degree when you hold shift while rotating.
If you mean rotate by 1 degree when exporting I decided to go 5 degree angles so it doesn't create 360 images but in the next release you will be able to choose your angle and much more...
in the next update , could you add the possibility to choose the numbers of degrees when we export please? I'm in a hurry for the new version to arrive!
