made in-memory seendb case insensitive

modules/seen.py

@@ -8,6 +8,8 @@ import threading
 from datetime import datetime
 from sqlite3 import OperationalError
 
+from requests.structures import CaseInsensitiveDict
+
 from tools.time import relativeTime
 from module import commands, example, hook, require_chanmsg
 
@@ -17,11 +19,11 @@ def load_database(bot):
 	Loads all entries from the 'seen' table in the bot's database and
 	returns them.
 	"""
-	data = {}
+	data = CaseInsensitiveDict()
 	seens = bot.db.execute("SELECT * FROM seen").fetchall()
 
 	for seen in seens:
-		nick, seen = seen[0], seen[1:]
+		nick, seen = seen[0].lower(), seen[1:]
 		data[nick] = seen
 	return data