20211224 - v2.9.7

• fixed: -focus=0 can't return previous tabpage with -pos=TAB
• new option -encoding=? makes it possible to specify encoding for each command's stdout independently.

For example, you have your global g:asyncrun_encs set to gbk but you have a command with utf-8 encoding and you don't want to change your global settings:

:AsyncRun -encoding=utf-8  ./my_utf8_command

This will prevent changing g:asyncrun_encs.