0.9.0

Added

• Rename a light source added by name (#22, thanks @MapperD). Its editor now has an Item Name field, so a typo no longer means removing the source and setting it up again. The name is the one an item must have in a character's inventory, so changing it changes which items count as this light.
• Duplicate a light source (#22). A new button on each entry of Configure Light Sources copies the source, with its patterns, consumption and duration, as a starting point for a new one. The copy is always a source added by name, called "Lantern (Copy)" for a source named Lantern, and its editor opens right away so you can rename it.

Fixed

• A source made from an item follows that item's name and icon. The name was copied once, when the item was dragged in. Renaming the item afterwards left the old name on the source, and copies of a world item stopped matching it, so the light disappeared from the Token HUD. Fix the item's name and the source now follows.
• Dragging in an item with the same name as a source added by name is refused. The two sources would otherwise claim the same items.