Add support to Unexpected for testing Set instances.

NPM version Build Status Coverage Status Dependency Status

expect(new Set([1, 2, 3]), 'to satisfy', [3, 4]);
expected Set([ 123 ]) to satisfy [ 34 ]
 
Set([
  
1,
  
2,
  
3
  
//
 
missing 4
])
Fork me on GitHub