- Switch to the new domain used by YouTube for search suggestions,
suggestqueries-clients6.youtube.com, and add the xhr query parameter with the
t value, to allow getting responses without requiring trim;
- Use the Java 8 Stream API to collect search suggestions and improve invalid
response detection by checking whether the content type of the response
returned is JSON;
- Move the licence header at the top of the file.
- Handle special cases for languages where the number is not shown
- Rework the Downloader base implementation, allowing for more
advanced things to be done
- Separate the localization from the content country (just like
YouTube let's the user choose both).