Sometimes, when I run the epubcheck plugin, there is an erorr that tells me I have to add properties="svg" to the titlepage entry in the opf file, when the image in the titlepage is defined as <svg>.
It does not seem to be an important error, because the epub still works on my ebook reader, when I leave the error as is.
However, this error still annoys me, and I like to remove it. Unfortunately, a regex does not help, as I need to check if an svg tag is present in the titlepage. So, a plugin would be very helpful.
I do not know if many people have encountered this error. And I do not know how diificult it would be to programm such a plugin.
It would be nice to have the option to automatically change this.
