Proxmark Updates

I thought this might be a good place to share SIGNIFICANT Proxmark updates.
Both hardware and software / firmware updates that specifically aid and assist our community.

A good example would be the ProxLF antenna for the Proxmark3 RDV4

Or something like this that @iceman shared late last year

A user contribution added “lf t55xx sniff” for easy sniffing of the cloner guns. aka blue gun or white gun.