vmm-sys-util-v0.8.0

v0.8.0

• Added set_check_for_hangup() to PollContext.
• Added writable()/has_error()/raw_events() to PollEvent.
• Derived Copy/Clone for PollWatchingEvents.
• Fixed the implementation of write_zeroes to use FALLOC_FL_ZERO_RANGE
  instead of FALLOC_FL_PUNCH_HOLE.
• Added write_all_zeroes to WriteZeroes, which calls write_zeroes in a
  loop until the requested length is met.
• Added a new trait, WriteZeroesAt, which allows giving the offset in file
  instead of using the current cursor.
• Removed max_events from Epoll::wait which removes possible undefined
  behavior.
• [#104]: Fixed FAM
  struct PartialEq implementation.
• [#85]: Fixed FAM struct
  Clone implementation.
• [#99]: Validate the
  maximum capacity when initializing FAM Struct.