Add __repr__ call for PrrtCodingConfiguration.

prrt/prrt.pyx

@@ -98,6 +98,9 @@ cdef class PrrtCodingConfiguration:
         if self._c_config != NULL:
             cprrt.PrrtCodingParams_destroy(self._c_config)
 
+    def __repr__(self):
+        return "PrrtCodingConfiguration(n={},k={},n_cycle=[{}])".format(self.n, self.k, ",".join(map(str, self.n_cycle)))
+
     cdef copy(self, cprrt.PrrtCodingParams* other):
         cprrt.PrrtCodingParams_destroy(self._c_config)
         self._c_config = other