Hit + Die 1.1

New version corrects some early issues:

• Wizard's Arcana ability was redundant with implications of Intelligence ability; replaced with flexible Cantrip
• Bard's Inspiration ability was not great, also phrased redundantly with Charisma ability; revised as Battle Song
• Thief's Infiltration ability was redundant with DM guidelines to be generous with info and assume caution; replaced with Fast Talking
• Miscellaneous typos and rephrasing