Log Message:
sysutils/xplr: update to 0.20.1

Changes & fixes
 - xplr shell will default to $SHELL, using bash as a fallback. oh-my-zsh users
   please add TRAPEXIT() { echoti rmkx; } in your .zshrc (see #499 for more
   info).
 - (experiment) xplr will now display full-screen help menu in intermediate
   modes. Set xplr.config.modes.builtin[mode].layout = nil to disable. e.g.
   xplr.config.modes.builtin.create.layout = nil
 - Added new utility functions to work with json and yaml data.
     - xplr.util.from_json()
     - xplr.util.to_json()
     - xplr.util.from_yaml()
     - xplr.util.to_yaml()
 - Added new utility function xplr.util.version() to get the currently running
   binary version (semantic versioning fields).
 - Fixed displaying multispace characters (Japanese, Chinese...), thanks to
   @Elvyria for contributing to tui-input.
 - Fixed a bug causing the creation of a new directory named .\n when creating
   new files containing space in the name.
 - Minor UI updates.