Adds point-blank shooting

Adds point blank shooting, now you can shoot anyone even if they are on
the same tile or one tile from you. On harm intent, you BUTT-STROKE or
PISTOL WHIP (military terms!!) people with the gun, allowing for not
quite harmful floggings.

Makes gun.dm less shit.
mergending
Adds missing newline
Make reenter-corpse not delete your spells
Merge pull request #3383 from MrPerson/qdel_spells_TAKE_TWO

Make reenter-corpse not delete your spells
Emergency fix to make the code compile.

I'm so sorry ;_;
Update README.md
Merge pull request #3376 from VistaPOWA/point_blank

Adds point blank shooting
Makes the code compile again
Reverts random changes to the dme introduced in #3254
Merge pull request #3395 from Incoming5643/CompileDamnYou

Makes the code compile again
Merge branch 'master' of https://github.com/tgstation/-tg-station