Improve effectToBenefit
Disable debug message about pinging

It's tested enough and quite spammy.
Limit the AI use of difficult abilities
Let impossible level-switching spells fizzle
Don't report "jammed by an item" if nothing to alter
Minimize long stair chains
Prettify debug output with pretty-show
Fix bracing to block

in the case of foes acting in precisely the same time point, but after
the blocking actor. As a side-effect, the brace in the status line
shows that we braced last turn (or we brace right now, if the turn
still runs).
Simplify actor-related code by overwriting kind fields
Remove rarely used oname and osymbol
Make fileds of all datatypes strict

with very few exceptions where I need to tie the knot
and with the exception of functional fields (mostly for readability).
Strict fields are the default in this cod base. Non-strict fields
require benchmarking to confirm they optimize the execution
or some other important reason, preferably documented in code.
Make peek game mode more similar to campaign mode
Give more feedback with domination and other effects