Fix .size method to use IPFS object_stat, not block_stat.

Author: jeffbr13

ipfs_storage/__init__.py

@@ -7,7 +7,7 @@
 import ipfsapi
 
 
-__version__ = '0.0.3'
+__version__ = '0.0.4'
 
 
 @deconstructible
@@ -65,7 +65,7 @@ def get_available_name(self, name, max_length=None):
 
     def size(self, name: str) -> int:
         """Total size, in bytes, of IPFS content with multihash `name`."""
-        return self._ipfs_client.block_stat(name)['CumulativeSize']
+        return self._ipfs_client.object_stat(name)['CumulativeSize']
 
     def delete(self, name: str):
         """Unpin IPFS content from the daemon."""