IT HAS UPDATED!!!
add support for 1.20.3/1.20.4. If you have downloaded an older version and it doesn't work, please try this new one. If still not work, please let me know via e-mail or GitHub Issues.
WARNING
Fabric loader v0.15.0 or higher(which also acquires fabric API v0.91.1 or higher) is required in this version.
support for 1.16.5
not fully tested in multi-environment. If any bugs appears, please inform me on github or by email. Email address: easterghost1@gmail.com