Update Changelog for 1.6.12
Update Changelog for 1.6.12

bitwiseman/js-beautify,Coburn37/js-beautify,Coburn37/js-beautify,aecepoglu/js-beautify,bitwiseman/js-beautify,aecepoglu/js-beautify,beautify-web/js-beautify,aecepoglu/js-beautify,beautify-web/js-beautify,bitwiseman/js-beautify,Coburn37/js-beautify,beautify-web/js-beautify,aecepoglu/js-beautify,bitwiseman/js-beautify,Coburn37/js-beautify,beautify-web/js-beautify