ps 1.8.0

• New ps_apps() function to list all running applications on macOS.

• New function ps_disk_io_counters() to query disk I/O counters
  (#145, @michaelwalshe).

• New ps_fs_info() to query information about the file system of one
  or more files or directories.

• New ps_wait() to start an interruptible wait on multiple processes,
  with a timeout (#166).

• ps_handle() now allowes a numeric (double) scalar as the pid, as long
  as its value is integer.

• ps_send_signal(), ps_suspend(), ps_resume(), ps_terminate(),
  ps_kill(), and ps_interrupt() can now operate on multiple processes,
  if passed a list of process handles.

• ps_kill() and ps_kill_tree() have a new grace argument.
  On Unix, if this argument is not zero, then ps_kill() first sends a
  TERM signal, and waits for the processes to quit gracefully, via
  ps_wait(). The processes that are still alive after the grace period
  are then killed with SIGKILL.

• ps_status() (and thus ps()) is now better at getting the correct
  status of processes on macOS. This usually requires calling the external
  ps tool. See ?ps_status() on how to opt out from the new
  behavior (#31).

ps 1.7.7

• ps_cpu_times() values are now correct on newer arm64 macOS.

ps 1.7.6

• ps_name() now does not fail in the rare case when ps_cmdline() returns an empty vector (#150).

• ps_system_cpu_times() now returns CPU times divided by the HZ as reported by CLK_TCK, in-line with other OS's and the per-process version. (#144, @michaelwalshe).

ps 1.7.5

No user visible changes.

ps 1.7.4

• ps::ps_get_cpu_affinity() now works for other processes on Linux, not only
  the calling process.

ps 1.7.3

• The output of ps_disk_usage(), ps_disk_partitions() and
  ps_shared_lib_users() now do not include a spurious stringsAsFactors
  column.

ps 1.7.2

• ps_system_memory()$percent now returns a number scaled between 0 and 100
  on Windows, rather than between 0 and 1 (#131, @francisbarton).

v1.7.1

• ps now returns data frames instead of tibbles. While data frames and
  tibbles are very similar, they are not completely compatible. To convert
  the output of ps to tibbles call the tibble::as_tibble() function
  on them.

• ps() now does not fail if both user and after are specified (#129).

ps 1.7.0

• ps now compiles on platforms that enable OpenMP (#109).

• New functions ps_get_cpu_affinity() and ps_set_cpu_affinity() to query
  and set CPU affinity (#123).

• ps_memory_info() now does not mix up rss and vms on Linux.

• ps_memory_info() now reports memory in bytes instead of pages on Linux (#115)

v1.6.0

• New function ps_system_cpu_times() to calculate system CPU times.

• New function ps_loadavg() to show the Unix style load average.