Edit mode support (receiver)

Added edit mode support to NdiReceiver. It only actively updates the target texture while selected with the inspector.

Edit mode support (sender)

Added edit mode support to NdiSender. Now it sends frames while editing.

Small fixes and improvements

• Disabled fielding (interlacing) to solve the resolution regrading problem (issue #6).
• Updated the receiver to cache the callback function pointer (issue #3).
• Updated the receiver to invoke IncrementUpdateCount when updating textures (issue #5).

The first working version.

v0.0.1

General improvements and bug fixes