dual_screen 1.0.0+3

Dual-screen and foldable support, like hinge angle sensor data.

1.0.0+3

• Updated Readme

1.0.0+2

• DualScreenInfo.hingeAngleEvents now caches the last value
• Updated Readme

1.0.0

• DualScreenInfo.hingeAngleEvents: Broadcast stream of events from the device hinge angle sensor
• DualScreenInfo.hasHingeAngleSensor: Future returning true if the device has a hinge angle sensor