iPadScreen 1.0.1

Fixes

• iPad: screen no longer freezes after the mouse stops (the last frame was dropped when the send queue was full)
• iPad app no longer crashes at launch when built with a recent Xcode (links with ld-classic)
• Mac: a clear warning when no virtual display is found, with automatic retry once it appears
• Build scripts work with newer Swift toolchains

New

• Mouse cursor is drawn by the iPad as its own layer: smooth and no video cost
• Still screens get a sharp frame after a short pause

Update both the Mac app and the iPad app; the cursor needs both.