Merge pull request #52 from qbzzt/patch-3

feat(Yul): When assembly fails, show failed code

src/ethereum_test_tools/code/yul.py

@@ -42,7 +42,7 @@ def assemble(self) -> bytes:
             )
 
             if result.returncode != 0:
-                raise Exception("failed to compile yul source")
+                raise Exception("failed to compile yul source: " + self.source)
 
             lines = result.stdout.decode().split("\n")