Add more characters to white space check

https://redd.it/y3nbdr
Related Unicode characters with property White_Space=no in
https://en.wikipedia.org/wiki/Whitespace_character#Unicode

redditbot.py

@@ -101,6 +101,12 @@ def title_or_shortlink(submission):
         '\u202F', # narrow no-break space
         '\u205F', # medium mathematical space
         '\u3000', # ideographic space
+        '\u180E', # mongolian vowel separator
+        '\u200B', # zero width space
+        '\u200C', # zero width non-joiner
+        '\u200D', # zero width joiner
+        '\u2060', # word joiner
+        '\uFEFF', # zero width non-breaking space
     )))
     return f'<a href="{submission.shortlink}">{html.escape(title)}</a>' if title else submission.shortlink