Created attachment 853487 [details]
.gitignore generated images

Optimizing PNGs would save quite a bit in file sizes. Running optipng -o7 on all of them (should be done in upstream git) results in:

$ du -bc $(find -name "*.png") | tail -n 1 # before
4582703	total

$ du -bc $(find -name "*.png") | tail -n 1 # after
4028860	total

Attached is also two related patches against upstream git.