[decof/du/tru64] Remove support because the os is no longer updated for more than 10 years
[openstep/nextstep] Remove support because the os is no longer updated for more than 20 years
Add experimental build system based on Autotools (#270)
Fixed LTsock testing on darwin (#272)
Remove NEW and OLD folders (#6)
Fix FreeBSD testcases (#271)
Rewrite documentation and publish at https://lsof.readthedocs.io/