Okay, I decided to put the deep-float-copy script in this section because it is related to Gimp. Feel free to move it.
The deep-float-copy script is something I found online (https://gimper.net/resources/cut-copy-and-paste-multiple-layers.164/), but it was broken for gimp 2.8, so I fixed it. Gimp still has not improved its layers as far as I know.
It is useful for copying link layers that are selected. Make sure to select the area of the linked layers or a few error messages will appear. The preview below shows the character being selected. Float Linked Layers (Copy) will instantly copy all the linked layers.
Install:
Linux: Put it in /home/YourName/.gimp-2.8/scripts
Other: https://en.wikibooks.org/wiki/GIMP/Installing_Plugins#Copying_the_plugin_to_the_GIMP_plugin_directory
Image Example + sneak peak:
Preview (https://mega.nz/#!yUt2CQzT!8lTpE5164MZ8E-ADmLuIrGWBACfVUa6c5lRSgj7Jo28)
Downloads:
Download (http://forum.solarus-games.org/index.php?action=dlattach;topic=1188.0;attach=661) (Login to download)
Alternative Download (https://mega.nz/#!Dd90WYab!2npoOCUlowKaMoF-UIhL-htpcvz1I5yMwwkGyvzi1oY)