TODO.txt

Migrate to java.time
Migrate to java.nio

Ping search engines

Text file reader
Sitemap reader

Improve validator for basic sitemap case (gzip, 10MB, urls, encoding)
validate Image/Video/News sitemaps

JS api
addUrl({url:"https://www.example.com",lastMod:"2007-08-01");
new WebSitemapGenerator({});
new SitemapIndexGenerator({});

Remove deprecated Google Image sitemap tag:
    https://developers.google.com/search/docs/crawling-indexing/sitemaps/image-sitemaps?#deprecated
    https://developers.google.com/search/blog/2022/05/spring-cleaning-sitemap-extensions

Update Google Video Sitemap classes to match latest schema (missing attributes, mark deprecations):
    https://developers.google.com/search/docs/crawling-indexing/sitemaps/video-sitemaps
    https://developers.google.com/search/blog/2022/05/spring-cleaning-sitemap-extensions