Feature request: open PNG with embedded metadata for edit

[sarg]

Plantuml embeds the diagram's source code in PNG metadata. It also could be extracted using the -metadata argument to the program. It would've been nice to make the plugin support opening such PNG for edit.

[krasa]

Like this?

[sarg]

Oh, cool, it's already there. One thing to make it perfect - extract to the same directory where the PNG is. This way user would be able to overwrite the existing image by simply saving the edited source.

[krasa]

Sounds good.