Lönn - 1.0.2

• Reduced file size of saved maps using the first or no layer groups. They are now closer to previous file sizes again.
• Fixed crash in styleground window
• Fixed issues when selecting stylegrounds in styleground window
• Fixed cases of flickering in styleground window
• Fixed dropdowns in lists not working
• Fixed instance of certain entity and trigger layers not showing up
• Fixed being able to select objects in hidden layer groups
• Fixed instance of objects being placed into the wrong layer
• Fixed deletion of a layer group not also deleting the layer name in the map data