Add max_score parameter to only delete comments with this score

or less.

shreddit.cfg.example

@@ -55,4 +55,9 @@ whitelist_gilded = True
 # except on whitelisted subreddits but after 3 months delete everything.
 nuke_hours = 0
 
+# Only delete comments with this score or less, or delete all comments
+# if this is not set.
+
+max_score =
+
 # vim: syntax=config

shreddit.py

@@ -56,6 +56,10 @@ item = config.get('main', 'item')
 whitelist_distinguished = config.getboolean('main', 'whitelist_distinguished')
 whitelist_gilded = config.getboolean('main', 'whitelist_gilded')
 nuke_hours = config.getint('main', 'nuke_hours')
+try:
+    max_score = config.getint('main', 'max_score')
+except ValueError:
+    max_score = None
 _user = config.get('main', 'username')
 _pass = config.get('main', 'password')
 
@@ -127,6 +131,8 @@ for thing in things:
         continue
     if whitelist_gilded and thing.gilded:
         continue
+    if max_score is not None and thing.score > max_score:
+        continue
 
     if trial_run:  # Don't do anything, trial mode!
         if verbose: