Converting from We Deal in Lead & Text Only Version, update to v0.9

Minor fixes and changes, including removing the existing cover image.

I’ve also added a free text only download (PDF and Markdown), as the Bestiary is released with a CC BY-SA licence!

v0.9

• Removed cover image pending new art (see devlog)
• Added section on converting monsters from We Deal in Lead and converting Runecairn monsters for other systems
• Updated entry for dwarf for greater flavour
• Updated image for death warden
• Moved troll before rock troll
• Minor spelling corrections