1.1.5.0931

The 1.1.5.0931 update lowered the volume of the mod's music and included some minor changes.

Changes

 * All Calamity music tracks have had their volume lowered.
 * Calamity ores can now be detected by the Metal Detector.
 * Calamitas' Treasure Bag now drops 1 to 3 Blighted Lenses.
 * Resprited Opal Striker.