Don't overwrite default numpy bindings from liglow in record.io

pycbc/io/record.py

@@ -46,7 +46,11 @@
 # =============================================================================
 #
 # add ligolw_types to numpy sctypeDict
-numpy.sctypeDict.update(ligolw_types.ToNumPyType)
+# but don't including float -> float32 and int -> int32 bindings, so as not
+# to change numpy defaults
+numpy.sctypeDict.update({_k: _val
+                         for (_k, _val) in ligolw_types.ToNumPyType.items()
+                         if _k != 'float' and _k != 'int'})
 
 # Annoyingly, numpy has no way to store NaNs in an integer field to indicate
 # the equivalent of None. This can be problematic for fields that store ids: