Only scrobble episodes viewed by a specific user

In order to only scrobble views by a specific Plex user (e.g. you share your server with others), we need to have a look at multiple lines. Here's a quick git diff of a possible approach:

diff --git a/plex_tvst_scrobbler/plex_monitor.py b/plex_tvst_scrobbler/plex_monitor.py
index 1e5734c..3ea3053 100755
--- a/plex_tvst_scrobbler/plex_monitor.py
+++ b/plex_tvst_scrobbler/plex_monitor.py
@@ -20,14 +20,14 @@ def parse_line(log_line):
     logger = logging.getLogger(__name__)
 
     REGEX = [
-        re.compile('.*Updated play state for /library/metadata/([0-9]+).*')
+        re.compile('.*philipp-spiess.*Updated play state for /library/metadata/([0-9]+).*', re.DOTALL)
     ]
 
     for regex in REGEX:
         m = regex.match(log_line)
 
         if m:
-            logger.info('Found played TV show and extracted library id \'{l_id}\' from plex log '.format(l_id=m.group(1)))
+            logger.info('Found played TV show by philipp-spiess and extracted library id \'{l_id}\' from plex log '.format(l_id=m.group(1)))
             return m.group(1)
 
 
@@ -126,9 +126,10 @@ def monitor_log(config):
             f.seek(0, 2)
             st_mtime = int(os.fstat(f.fileno()).st_mtime)
 
-        line = f.readline()
+        lines = f.readlines(2000)
+        line = ''.join(map(str, lines))

         # read all new lines starting at the end. We attempt to match
         # based on a regex value. If we have a match, extract the media file
         # id and send it off to tvshowtime.com for scrobble.
         if line: