Log Message:
st-term: Update to 0.8.4

Changes:
0.8.4
=====
Security
--------

* config.def.h: add an option allowwindowops, by default off (secure).

  Similar to the xterm AllowWindowOps option.
  The sequence for base64-encoded clipboard copy is now guarded and off by
  default because it allows a sequence written to the terminal to manipulate the
  clipboard of the (other) running user non-interactively.

Features
--------

* Integrate auto-sync: draw on idle to avoid flicker/tearing by avih.
  st could easily tear/flicker with animation or other unattended
  output. This commit eliminates most of the tear/flicker.

* Optimize column width calculation and UTF-8 encode for the common-case ASCII.
  In particular on glibc and OpenBSD the wcwidth() call is more expensive.
  On musl there is no/little difference.

* Add support for REP (repeat) escape sequence and xterm compatibility, by
  avih.  The capability is not exposed yet due to some issues with
  applications.

* Call xsetcursor to set win.cursor in main, by Steve Ward.
  Allowing to set the st snowman cursor extension dynamically.

Fixes and other changes
-----------------------

* Fix unicode glitch in DCS strings, by Tim Allen.
  The related sixel stub code is now removed also.

* Fix for incorrect (partial) written sequences when libc wcwidth() == -1
  and using st -o.

* Mouse selection fixes, by Jakub

* Make shift+wheel behaves as shift+Prev/Next, patch by k0ga
  This patch adds a new hack, making shift+wheel returning the
  same sequences than shift+Prev/Next, meaning that scroll or
  any other similar program will not be able to differentiate
  between them.

* Expose rin terminfo capability.
  Tianlin Qu discovered that st is missing rin (scroll back #1 lines).

* Replace exit(3) by _exit(2) in signal handler sigchld(), by Jan.
  This change prevents st to crash and dump core in some situations.

* FAQ: add details and a patch example for single-buffering (for the w3mimg
  hack).