Release Notes for Version 1.8.6

Use maximum of 64 previous tilt values in pyro tilt tests

Eliminate 100m height requirement for coast detection

Change After Motor pyro check to be >= instead of ==

Change Time since Boost to be Time since launch.

Clarify pyro test phrasing

Remove ascending/descending from pyro config UI

Fix accel calibration in Antenna Down mode

Add mag sensor reporting for TeleMega v3 idle monitoring.

Fix radio parameter saving at 2400 bps telmetry rate.

Report altimeter-recorded maximum height value