New Cover (and other tweaks)

Hey all. Minor update to the files, mostly with a slightly tweaked cover. Increased some contrast and added some actual blood effects. Something that's a bit easier to look at. I also found a few more minor formatting issues in the PDF that I fixed. 

If you haven't checked it out yet, be sure to check out our itchfunding to create some supplements for The Blood!

https://itch.io/s/55065/itchfunding-for-the-blood-spirits