Sentences now auto-punctuate if there's no punctuation. (#6510)

See title. Shouldn't interfere with most if not all cases, however I've no way of testing bolding as it just doesn't work locally - theoretically, should be fine.

code/modules/mob/living/say.dm

@@ -176,6 +176,10 @@ proc/get_radio_key_from_channel(var/channel)
 
 	message = trim_left(message)
 
+	var/ending = copytext(message, length(message), (length(message) + 1))
+	if(ending != "!" && ending != "." && ending != "?" && ending != "-")
+		message += "."
+
 	//parse the language code and consume it
 	if(!speaking)
 		speaking = parse_language(message)

html/changelogs/MattAtlas-PunctuationOrdie.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes: 
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.  
+author: MattAtlas
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - rscadd: "'Say' will now autopunctuate sentences if they don't end with a dash, exclamation point, period or question mark."