Merge pull request #23 from wakamex/patch-1

fix: call block_number property of BlockObject

Author: Jon-Becker

demo/gas.py

@@ -6,4 +6,4 @@
 
 blocks = api.block.blocks_by_number(order='desc', limit=500)
 fig, ax = plt.subplots()
-ax.plot([x.number for x in blocks], [x.gas_used for x in blocks])
+ax.plot([x.block_number for x in blocks], [x.gas_used for x in blocks])