lots of additions and enhancements
see https://github.com/librtlsdr/librtlsdr/blob/master/README_improvements.md

again for version compatibility, this time for existing software:

see issue #134
especially #134 (comment)
and https://twitter.com/ryzerth/status/1771016439681466697

DON'T USE THIS ONE - unless you know what you are doing.
prefer v0.9, which is more up to date, than this v2.1 !
see #134 (comment) for explanation
and https://twitter.com/ryzerth/status/1771016439681466697

lots of additions and enhancements
see https://github.com/librtlsdr/librtlsdr/blob/master/README_improvements.md

for version compatibility with
https://github.com/steve-m/librtlsdr/tree/v2.0.1 and
https://github.com/osmocom/rtl-sdr/tree/v2.0.1
see #134

lots of additions and enhancements
see https://github.com/librtlsdr/librtlsdr/blob/master/README_improvements.md

builds (below) from github actions

All binaries for Win32 for testing ..
librtlsdr-win32_2020-08-26.zip

Added Bias T Support to rtl_(adsb|fm|power|tcp) and fixed some bugs.
Fixed stddef.h include in rtl-sdr.h header.

Features:

• Option '-T' for activating bias-T in rtl_(adsb|fm|power|tcp)
• Some fixes to headers
• Option '-w' to rtl_sdr

option '-T' for activating bias-T in rtl_(adsb|fm|power|tcp)

• Added RPC Calls (For POSIX OSes)
• Fixed bugs in Tuner Gains for R8XX Tuners
• Added Infrared Receiver support
• Added Manual IF Bandpass Filter Control

Features:

• Tuner Bandwidth (IF Filter) by rtlsdr_set_tuner_bandwidth and rtlsdr_set_and_get_tuner_bandwidth and also in rtl_fm with -w option.
• Infrared support by rtlsdr_ir_query and rtl_ir

Binaries for Win32 with tuner bandwidth option