The UTF chars break the test

Index: commonmark/tests/run_spec_tests.py
--- commonmark/tests/run_spec_tests.py.orig
+++ commonmark/tests/run_spec_tests.py
@@ -185,7 +185,7 @@ def main():
             passed += 1
             catStats[current_section][0] += 1
             if not args.f:
-                print(colors.OKGREEN + '✓' + colors.ENDC, end='')
+                print(colors.OKGREEN + 'O' + colors.ENDC, end='')
             if args.d:
                 dumpAST(ast)
             if args.p or args.d and not args.np:
@@ -206,7 +206,7 @@ def main():
                 print("Test #" + str(args.t.split(",")[i]), end='')
             else:
                 print("Test #" + str(i+1), end='')
-            print(' ' + colors.FAIL + "✗" + colors.ENDC)
+            print(' ' + colors.FAIL + "F" + colors.ENDC)
             if args.d:
                 dumpAST(ast)
             if not args.np or args.f:
