Derive FileSystem::(Read/Write)Stream from std::(i/o)stream
fix warning in filecontainerzip.cpp
Split large macro definition for better debugging
Allow to "export" external canvas
Remove debug code
Fix bug with zip-container
Change extension of zip-container to "sfg"
Code for include external canvases into container. Not works yet
Fix bug with saving images into container
Export canvas with value nodes
Import all external canvases while saving into container (.sfg)
Fix bug with resaving container.
Replace prefix "container:" to "#"
Fix naming of imported canvases
Fix bug with disappearing images after save into container
Typo
Embed layer action
Typo
Extract layer action
Short filenames params: #filename.png instead of #images/filename.png