Avoid error in older browsers in test
Avoid error in older browsers in test

The tests are run through the transpiler and just reverting the user of template literal is easier than adding transpiler to the test stack.
wycats/handlebars.js,mosoft521/handlebars.js,mosoft521/handlebars.js,handlebars-lang/handlebars.js,gautamkrishnar/handlebars.js,wycats/handlebars.js,wycats/handlebars.js,handlebars-lang/handlebars.js,handlebars-lang/handlebars.js,handlebars-lang/handlebars.js,mosoft521/handlebars.js,jbboehr/handlebars.js,wycats/handlebars.js,handlebars-lang/handlebars.js,wycats/handlebars.js,gautamkrishnar/handlebars.js,mosoft521/handlebars.js,mosoft521/handlebars.js,gautamkrishnar/handlebars.js,jbboehr/handlebars.js,jbboehr/handlebars.js