Version 1.0.13 released

jonas

Fixed volume synchronization leading to infinite loop resulting in crash when adjusting volume while playing (#1089).
Fixed incorrect volume.
Fixed collection organizing incorrectly handling slashes inside {} brackets for variables (#1091).
Fixed saving relative playlists to non-existing playlist files (#1092).
Fixed intermittent crash on collection model query (#1095).
Require system icons for fancy tabbar and settings sidebar to be larger than 22x22 (#1084).