The official distribution doesn't include minified files, so just minify the files ourselves.
It's in maintenance mode anyway.
Commands for future reference:
* cleancss --compatibility ie9 -O1 specialComments:0 -o daterangepicker.min.css daterangepicker.css
* terser daterangepicker.js --compress typeofs=false --mangle --source-map url=daterangepicker.min.js.map -o daterangepicker.min.js
Signed-off-by: XhmikosR <xhmikosr@gmail.com>