Move to circular buffer

v0.1.4

Merge branch 'main' of https://github.com/ncmreynolds/ld2410

Bugfix for updated Arduino cores

Update to some Serial.write() statements to be compatible with more Arduino core variants. Expand examples to be slightly more verbose and explain lack of ESP8266 support in the example.

First bugfix

Fixes #1
Values for moving and stationary targets were transposed
Improvements to command/ack parsing
Improvements to debug output

v0.1.0

Initial release, all important features seem to work. No support for Engineering Mode data yet, that is on the to-do list.