level and skillpoints_trained attributes for Skill objects; usable only when created through a Character's skills method
fix infinite expiration attributes on keys, and include key_id+vcode for keyinfo method
update skill list attribute on characters to actually contain fullblown Skill objects now, instead of just the placeholder hashrefs
fix short-circuit logic for when to call remote API for updating cache
for-reals fix to remote api call short-circuiting
mirroring the now-tested-and-working cached api call short-circuit