re opt-in SIM

Author: cderv

tests/testit/test-formats.R

@@ -76,7 +76,7 @@ test_format("rjournal")
 test_format("rsos")
 test_format("rss")
 test_format("sage")
-test_format("sim", skip = TRUE) # sim format currently broken
+test_format("sim")
 test_format("springer", skip = !rmarkdown::pandoc_available("2.11.4"))
 test_format("tf", output_options = list(reference_style = "CAD"))
 test_format("tf", output_options = list(reference_style = "APA"))