dnssim v20210129
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- Added DNS-over-HTTPS support with https2()
- Added IPv4 support
- Abort operation on insufficient file descriptors
- Match QUESTION section of received responses
- Improvements in connection state handling
- Deprecate udp_only() in favor of udp()
- Allow setting logger name with log(name)
- Added check_version() and check_json_version()

dnssim v20200723
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- First released dnssim version with UDP, TCP and DoT support
