Two super simple feat. requests

Hi all, first post.


I'm hoping to see two really simple tweaks to YAC, 1.) Grayscale mode toggle (many b/w comics are still saved with color occlusions from the scans) 2.) Use "DEL" key to delete currently reading manga and advance to the next file would REALLY help purge a lot of garbage reads.

Thanks for the suggestions, I will consider them for future updates.