Do not trim if max length is set to 0

include/sardine.py

         suffix = "…"
         cooked = raw
         if self.plugindata.fmt == "plain":
-            if len(raw) > self.plugindata.maxlen:
+            if self.plugindata.maxlen and len(raw) > self.plugindata.maxlen:
                 newlen = self.plugindata.maxlen - len(suffix)
                 cooked = raw[:newlen] + suffix
         return cooked

sardine

 usage: sardine [options] COMMAND [ARGS...]
 
 Options:
-    -c, --chars CHARS specify limit in characters
+    -c, --chars CHARS specify limit in characters; zero means no limit
     --format FMT    specify format: plain is a plain text, xgp
                     is specific for xfce4-genmon-plugin
     -p, --plain     same as --format=plain