zoom-y images

[tjheffner]

i want all images coming from github markdown to be clickable into a zoom feature

something along these lines:
https://stackoverflow.com/questions/39858998/zoom-in-and-out-on-mouse-click-with-css

to wrap all img tags with multiple elements will likely need to write my own plugin like so:
mrzmmr/rehype-wrap#4

this should also replace the lazy loading img regex

[tjheffner]

added in #92