v0.2.2

Changelog

• Remove Windows support
  • It unnecessarily complicates portions of the code, especially the testing code.
  • It may require users to set an "invalid parameter handler" for it to work properly. Most probably won't realize this and will be confused to see their programs segfault.
  • The real killer: Windows handles file descriptors differently, and a function that closes all file descriptors just isn't necessary for security on Windows.
    The way I understand it, only file descriptors 0, 1, and 2 are ever inherited across program launches. File handles are inherited by default, but we can't close them.
• Implement size_hint() for FdIter
• Add warnings to the docs of iter_open_fds() and iter_possible_fds()
• Add Solaris/Illumos support
• Ensure FdIter is fused and mark it as such
• Minor internal refactoring