Watchdog and thresholds

Features:

• Implement configurable thresholds per region
• Add a watchdog to detect silent failures when reading the RTSP stream

Fixes:

• Fix missing numpy import for default mask files

0.1.1 - Add masking for person detection

Adds masking support for detecting people. The mask file should be a BMP and the same size as the resolution of your camera stream. If the bottom middle of the bounding box is located on a black pixel, it will ignore it.

0.1.0 - Google Coral, Multiple Cameras, etc

This release adds the following:

• Google Coral support (required for now)
• Motion detection was removed because the overhead of always looking for objects is much lower than looking for motion (planning to add motion detection back in the future)
• Send ON/OFF instead of raw person score to reduce MQTT message frequency
• Switch to config file instead of environment variables
• Add support for multiple cameras (Google Coral can only be used by one process)
• Detection models bundled in container

Initial Release

v0.0.1

add support for mqtt user/pass. closes #7