Bugfix: Checksum checking

- Previously checksum checking was always on (regardless of the value of 'check')

Author: Niko Pasanen

pynmea2/nmea.py

@@ -111,7 +111,7 @@ def parse(line, check=False):
         if checksum:
             cs1 = int(checksum, 16)
             cs2 = NMEASentence.checksum(nmea_str)
-            if cs1 != cs2:
+            if cs1 != cs2 and check:
                 raise ChecksumError(
                     'checksum does not match: %02X != %02X' % (cs1, cs2), data)
         elif check: