Fix optimisation flag

Author: nicolas-chaulet

setup.py

@@ -15,7 +15,7 @@
 
 TORCH_MAJOR = int(torch.__version__.split(".")[0])
 TORCH_MINOR = int(torch.__version__.split(".")[1])
-extra_compile_args = ["-03"]
+extra_compile_args = ["-O3"]
 if (TORCH_MAJOR > 1) or (TORCH_MAJOR == 1 and TORCH_MINOR > 2):
     extra_compile_args += ["-DVERSION_GE_1_3"]