KBackup-Fabric

This is the second minor update of version 4.

Version 1.4.1 was skipped because a more important bug had been observed and I decided to fix it immediately.

BugFix:

• (Critical but with limited range affected) The plugin makes a blank backup if the world (is created in client-side and) is not named as the same with the folder name (by default it is world, the backup will fail silently if the world name is not equal to the folder name).
• (Critical) The backup fails in MC 1.16.x because of the modification in Minecraft's internal lock on world (implemented as locking file session.lock).
• (Important) The plugin won't load on MC 1.16.x, because of the wrong requirement on Minecraft version.

Version 1.4.2 has been tested on local Minecraft 1.14.4, 1.15.2, 1.16.4 and 1.16.5 server. The backup has been compared with trivial Windows Exploer's copy version, and no faults have been observed. Thus it is expected to work fine. If you have any question or error, please report on Github repo or curseforge.