Merge pull request betaflight#4243 from ledvinap/fix-atomic-unittest

Cleanup betaflight#2420

Merge pull request betaflight#4250 from jflyper/bfdev-bff4-fix-buzzer…

…-inversion

BFF4: Beeper is on PB4, and is INVERTED

Merge pull request betaflight#4124 from spuder/api-version

Show MSP API version in cli

Merge pull request betaflight#2081 from iNavFlight/development

Release 1.7.3 (beta)

Change default Iterm Limit to 150

Merge pull request betaflight#3767 from AlienWiiBF/AF_Whoop_V2

Fix buzzer settings for AlienFlight Whoop V2.0

Merge pull request betaflight#3679 from jflyper/bfdev-16G-fullscale-f…

…or-spi-mpu6000-and-mpu9250

Fighting against gravity: Configurator shows twice the gravity for MPU6000 and MPU9250

Merge pull request betaflight#3643 from DieHertz/camera-control-defau…

…lt-pin

Added CAMERA_CONTROL_PIN for target-specific configuration

v2.1.0

Merge pull request betaflight#1912 from iNavFlight/development

Release 1.7.2