implemented multi-label support

Revert "minor fix"

This reverts commit 91e9847dd941fcb728a2e031fc7d8beff30f73fd.

 On branch master
 Your branch is up to date with 'origin/master'.

 Changes to be committed:
	modified:   hanlp/common/component.py
	modified:   hanlp/layers/transformers/loader.py

(cherry picked from commit 7bae452a112f5ea9f36acb527957d832d9a1b115)

minor fix

(cherry picked from commit 91e9847dd941fcb728a2e031fc7d8beff30f73fd)

minor fix

(cherry picked from commit d4104d7d57e1e08e24c659165422e43caaf017a9)

multi-label support cherry picked to master

(cherry picked from commit 62f7b3da720e7e517c44f01e49594ac065ed79a8)

implemented multi-label support

(cherry picked from commit a8444811e890c9ddc5c44ede6c9e1bd3e783aab3)