Log Message:
htop: Update to 2.2.0.

What's new in htop 2.2.0:

  * Solaris/Illumos/OpenIndiana support (thanks to Guy M. Broome)
  * -t/--tree flag for starting in tree-view mode (thanks to Daniel Flanagan)
  * macOS: detects High Sierra version to avoid OS bug (thanks to Pierre
    Malhaire)
  * OpenBSD: read battery data (thanks to @nerd972)
  * Various automake and build improvements (thanks to Kang-Che Sung)
  * Check for pkg-config when building with --enable-delayacct (thanks to
    @florian2833z for the report)
  * Avoid some bashisms in configure script (thanks to Jesin)
  * Use CFLAGS from ncurses*-config if present (thanks to Michael Klein)
  * Header generator supports non-UTF-8 environments (thanks to @volkov-am)
  * Linux: changed detection of kernel threads
  * Collapse current subtree pressing Backspace
  * BUGFIX: fix behavior of SYSCR column (thanks to Marc Kleine-Budde)
  * BUGFIX: obtain exit code of lsof correctly (thanks to @wangqr)
  * BUGFIX: fix crash with particular keycodes (thanks to Wellington Torrejais
    da Silva for the report)
  * BUGFIX: fix issue with small terminals (thanks to Daniel Elf for the report)
  * BUGFIX: fix terminal color issues (thanks to Kang-Che Sung for the report)
  * BUGFIX: preserve LDFLAGS when building (thanks to Lance Frederickson for
    the report)
  * BUGFIX: fixed overflow for systems with >= 100 signals

What's new in htop 2.1.0:

 * Linux: Delay accounting metrics (thanks to André Carvalho)
 * DragonFly BSD support (thanks to Diederik de Groot)
 * Support for real-time signals (thanks to Kang-Che Sung)
 * 'c' key now works with threads as well
 * Session column renamed from SESN to SID (thanks to Kamyar Rasta)
 * Improved UI for meter style selection (thanks to Kang-Che Sung)
 * Improved code for constructing process tree (thanks to wangqr)
 * Compile-time option to disable setuid
 * Error checking of various standard library operations
 * Replacement of sprintf with snprintf (thanks to Tomasz Kramkowski)
 * Linux: performance improvements in battery meter
 * Linux: update process TTY device
 * Linux: add support for sorting TASK_IDLE (thanks to Vladimir Panteleev)
 * Linux: add upper-bound to running process counter (thanks to Lucas Correia
   Villa Real)
 * BUGFIX: avoid crash when battery is removed (thanks to Jan Chren)
 * BUGFIX: macOS: fix infinite loop in tree view (thanks to Wataru Ashihara)