Refactor exceptions in Scan Op

93eb73fd · Brandon T. Willard · Brandon T. Willard · 3cccea1f · 93eb73fd · 93eb73fd
--- a/aesara/scan/c_code/scan_perform.c
+++ b/aesara/scan/c_code/scan_perform.c
--- a/aesara/scan/op.py
+++ b/aesara/scan/op.py
--- a/aesara/scan/scan_perform.pyx
+++ b/aesara/scan/scan_perform.pyx
--- a/aesara/scan/scan_perform_ext.py
+++ b/aesara/scan/scan_perform_ext.py