Grave v1.21

The latest update changes some text on the front page in response to some questions by readers:

• Introductory text better indicates what this document is meant to be used for (not for generating new adventures, but to provide characters and rules to run existing OSR adventures)
• Stat arrays for the Hunter and the Noble now match format of most other starting backgrounds (with +4 in one ability, +3 in another, +2 in a third, and +1 in the rest), with only the Outcast (inspired by the "Deprived" in the Dark Souls series) and Vagabond (a traditional, randomly-generated OSR PC) as outliers