Small breaking changes - two things have been renamed!

Changes

Renamed hp to current_hp
Renamed biography to background
Added species which does nothing currently.
Added speed which does nothing currently (defaults to 30).
Added temp_hp for temporary HP
Added personality, bonds, ideals, and flaws
Added max_hd and current_hd for tracking hit dice (note: hd is for the dice itself, e.g., d8, d10)
Added exhaustion which initializes to 0. Actual exhaustion mechanics will come in a later version.

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