Packages This is a collection of packages for more complicate solutions. Solutions Card game | test Elevator | test Palindrome | test Longest Palindrome Palindrome poems Examples Parking Lot | test Stocks | test Libraries api server, router, auth, proxy, params, logger, error, and etc. cfg configuration, environment, and context msg smtp mail with login auth orm extensions sig demo for creating zip sources str conversion and extensions, etc. zip creator and gzip handler