layers: allow empty layers to be saved
authorAndrew Chadwick <andrewc-git@piffle.org>
Fri, 7 Feb 2014 21:33:31 +0000 (21:33 +0000)
committerAndrew Chadwick <andrewc-git@piffle.org>
Fri, 7 Feb 2014 21:33:31 +0000 (21:33 +0000)
commite44327704a3a9284e9eeecec5812d072bb3c4a15
tree6bc9dfb542f17ba773620a55f5359a62f76e4c85
parent2d5e7e03b06c336396bc89cfdbf31dc2b9d1dfde
layers: allow empty layers to be saved

By user request: https://gna.org/bugs/?21579

Empty layers might express an artist's plans for document structure - which
can be fancier now we have nesting - or working state expressed in names.
Best to retain them when saving.
lib/layer.py