1.0.0-alpha12

• Add layerBlock parameter for drawBackdrop modifier, see the updated tutorial for more details
• Update highlight implementation
• Add blurRadius parameter for Highlight
• Remove HighlightStyle.Soft, as it is the same with HighlightStyle.Solid now
• Fix shape can't be updated
• Do some tiny optimizations
• Add more demos in catalog app, revamp the bottom tabs demo