Single and double CloseCurlyQuote entities aren’t properly encoded

[acusti]

The problem is with ’ (i.e. ’) and ” (i.e. ”), which are encoded as ’ and ”, respectively.

See this test case

UPDATE: It seems that the issue is specific to the Html5Entities class. When I repeated the test using require('html-entities').Html4Entities, the encoding worked (see updated test case above).