Fixes issue with --status when remote xml data is already downloaded but the download was incomplete
Downloader::getLocalFileHash returned the same file hash as Downloader::getRemoteFileHash which caused --status to report it as OK
... especially when using generic --ignore-dlc-count='.*'
previously, lgogdownloader would fetch game details for every game
that indicated that it has DLCs. Which were all of them when used with
--ignore-dlc-count - potentialy hundreds of http queries and cause of very slow
startup with larger accounts. Regardless of what --game regex said.
After the change, only initial list of all games is fetched, and then details
for games that both the user is interested in AND they are suspected of
having DLC. So it should help with startup time even when user doesn't use
--ignore-dlc-count option.
Ignoring DLC count information helps in situations where the account page doesn't provide accurate information about DLCs.
--ignore-dlc-count sets regular expression filter for games to ignore DLC count information.
Game specific option "ignore-dlc-count" can be used to ignore DLC count for specific game.
Sometimes when trying to get XML data failed and set API error it was never cleared.
This caused some files being skipped due to API still being in error state.
Useful in case platform identifier is missing for some games in the game shelf.
Using --platform with --list doesn't work when using --no-platform-detection
Helps with large libraries when running the downloader multiple times.
Getting game details for many games takes a long time. Caching the game details makes the process much faster for subsequent runs.
Game details are cached to "$XDG_CACHE_HOME/lgogdownloader/gamedetails.json"
--update-cache creates and updates the cache.
--use-cache enables loading game details from cache.
--cache-valid specifies how long cached game details are considered valid
