It didn't look pretty when images where larger than the viewport, and it
"broke" word wrap (because it stretched the phantom, and hence lines
wrapped further, see #34)
Sublime Text's minihtml only supports width and height attributes on
img tags, therefore, we have to determine the aspect ratio of the images
ourselves if we want to set a maxsize (so that we can set the height).
We use a hacky function copy pasted from stackoverflow to determine the
size of common format of images using std lib python.
Though they are still available to the devs, as they are just
`export-ignore`d in the .gitattributes. I've done a little bit of
research, and this attribute prevents the files from being archived by
git. So, I'm assuming that package control fetches archives of the
packages, and not the actual ones. But I haven't found any documentation
on packagecontrol.io stating that. I quickly browsed its source code
on GitHub, and couldn't really find anything. So, I'm going to contact
@jfcherng, who showed me this trick on FileManager.
