Version 0.16.0

Changes:

• opening and closing delimiters—such as ```javascript and ```—may now be specified (#110)
• coffeescript dependency upgraded from 1.10.x to 1.12.x (#103)
• commander dependency upgraded from 2.8.x to 2.19.x (#104)
• sanctuary-type-classes dependency upgraded from 9.0.x to 10.0.x (#105)