v1.5.0

• New function ps_shared_libs() to list the loaded shared libraries
  of a process, on Windows.

• New function ps_shared_lib_users() to list all processes that
  loaded a certain shared library, on Windows.

• New function ps_descent() to query the ancestry of a process.

v1.4.0

• ps is now under the MIT license.

• Process functions now default to the calling R process. So e.g. you can
  write simply ps_connections() to list all network connections of the
  current process, instead of ps_connections(ps_handle()).

• New ps_get_nice() and ps_set_nice() functions to get and set the
  priority of a process (#89).

• New ps_system_memory() and ps_system_swap() functions, to
  return information about system memory and swap usage.

• New ps_disk_partitions() and ps_disk_usage() functions, they
  return information about file systems, similarly to the mount and
  df Unix commands.

v.1.3.4

• ps_cpu_count() now reports the correct number on Windows, even if
  the package binary was built on a Windows version with a different
  API (#77).

v1.3.3

• New function errno() returns a table of errno.h error codes and
  their description.

• ps now compiles again on Solaris.

v1.3.2

• ps now compiles again on unsupported platforms like Solaris.

v1.3.1

• Fixed an installation problem on some Windows versions, where the
  output of cmd /c ver looks different (#69).

v1.3.0

• New ps_cpu_count() function returns the number of logical or
  physical processors.

v1.2.1

ps 1.2.1

• Fix a crash on Linux, that happened at load time (#50).

v1.2.0

ps 1.2.0

• New ps_connections() to list network connections. The
  CleanupReporter() testthat reporter can check for leftover open
  network connections in test cases.

• ps_open_files() does not include open sockets now on Linux, they are
  rather included in ps_connections().

• CleanupReporter() now ignores /dev/urandom, some packages (curl,
  openssl, etc.) keep this file open.

• Fix ps() printing without the tibble package (#43).

• Fix compilation with ICC (#39).

• Fix a crash on Linux (#47).

v1.1.0

ps 1.1.0

• New ps_num_fds() returns the number of open files/handles.

• New ps_open_files() lists all open files of a process.

• New ps_interrupt() interrupts a process. It sends a SIGINT signal on
  POSIX systems, and it can send CTRL+C or CTRL+BREAK events on Windows.

• New ps_users() lists users connected to the system.

• New ps_mark_tree(), ps_find_tree(), ps_kill_tree(),
  with_process_cleanup(): functions to mark and clean up child
  processes.

• New CleanupReporter, to be used with testthat: it checks for
  leftover child processes and open files in test_that() blocks.