Feature Request: Select screens for GIF animation

[Esshahn]

It would be cool if we could select a range when exporting screens as GIF animation, like

Settings could be (o) export all ( ) export from [ 2 ] to [ 14 ]

[hakkanpersson]

This would be very good! Also the same export for SEQ-file.

Either like @Esshahn suggested (where the user can choose from) a number series or numberseries + title of screen OR only screen name. When working with longer animations it becomes quite tedious to export 30 frames or more.