$ go get -u github.com/codecure/news-aggregator/...
$ aggregator -feed https://echo.tochka.com/feeds/topics/ru/ -rule "date=UpdatedParsed&content=Content" -db /path/to/db/dir
$ aggregator -feed https://habr.com/ru/rss/all/all/?fl=ru -rule "date=PublishedParsed&content=Description" -db /path/to/db/dir
$ aggregator-server -db /path/to/db/dir