Use mocha --require instead of --compilers (removed in mocha 6)

papandreou · papandreou · commit 8c6772dfad6a · 2019-05-21T00:21:00.000+02:00
diff --git a/test/mocha.opts b/test/mocha.opts
@@ -3,4 +3,4 @@
 --check-leaks
 --timeout 60000
 --require ./bootstrap-unexpected-markdown.js
---compilers md:unexpected-markdown
+--require unexpected-markdown
