These are the files with just tiny tweaks. Mostly modify an object's attackby so it does "return ..()" instead of "..()".
If there are other things in this commit, the PR's description will explain them.
- Replacing some "for(var/mob/o in viewers()) show_message()" by "visible_message()".
- Replacing some "show_message()" by " << "..." " instead.
- Fixes being able to see the results of the health and slime analyzers while blind.
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- Patch: Don't update html_interface clients that have been inactive for more than 10 minutes.
- Patch: Attempt to speed up _renderContent some more (in case of multiple clients) by using spawn.
- Patch: Second argument for hiIsValidClient hook: reference to the current html_interface object (used by crew monitoring computer).
- Feature: procqueue singleton. You can use this to put proc executions on a queue. Used by the crew monitoring computer to queue the update "for the next tick" when humans move.
