+- Added hf mf c* commands compatibity for 4k and gen1b backdoor (Fl0-0)
+- Added backdoor detection for gen1b magic s70/4k tag (Fl0-0)
+- Added data fsktonrz, a fsk cleaning/demodulating routine for weak fsk signal. Note: follow this up with a `data rawdemod nr` to finish demoding your signal.