bump to 1.6.0 (forgot the zero!)

Mark 1.5.2 release

v1.5.1 - setPowerLevelDBm() fix

https://lowpowerlab.com/forum/general-topics/power-levels-again/

Bump to v1.5

1.4.3 release

listenModeSleep fixes, 1.4.2 release

bump to v1.4.1

1.4.0 changeset

Update README.md

Update library.properties version 1.2