- added is set to current time, if a new song is added to the database.
- GetAdded falls back to mtime.
Code for proxy plugin is missing, this needs a patch for libmpdclient.
closes#378
After commit 1afa33c3c7, an old bug was revealed:
SimpleDatabase::GetSong() constructs an ExportedSong instance by
moving the return value of Song::Export(), which causes the
LightSong::tag field to be dangling on the moved-from
ExportedSong::tag_buffer. This broke tags from CUE sheets.
Closes https://github.com/MusicPlayerDaemon/MPD/issues/1070
