v0.2.1

Changelog:

• meta: improve efficiency of cross-platform interfaces on Solaris
• refactor: remove getpeereid()
• refactor(xucred): always define Xucred.pid
• fix(ffi): remove None check when loading libc (should fix on musl
  libc)
• fix(ucred): use correct socket level on NetBSD
• meta: fix packaging issues
• doc: improved documentation
• test: improved tests

v0.2.0

CHANGELOG:

• Use None instead of 0 if PID cannot be retrieved (BREAKING CHANGE)
• xucred: Store primary GID in separate field (instead of having it as a property that returns self.groups[0])
• Don't load libc using ctypes on Linux, where it isn't needed (adds support for statically linked systems)

v0.1.0

Initial release.

OS support:

• Linux (tested in CI)
• macOS (tested in CI)
• FreeBSD (tested in CI)
• DragonFlyBSD (untested)
• NetBSD (untested)
• OpenBSD (untested)
• Solaris/Illumos (untested; highly experimental)