- npm: Update devDeps

- Build: Switch to `terser` plugin with `uglify` plugin not
    supporting ES6+-capable minifier
- Linting (ESLint): Consistent curly spacing; follow new "standard"

rollup-config.config.js

@@ -1,8 +1,6 @@
 /* eslint-env node */
 import babel from 'rollup-plugin-babel';
 import replace from 'rollup-plugin-re';
-// import {minify} from 'uglify-es';
-// import {uglify} from 'rollup-plugin-uglify';
 
 const plugins = [
   replace({