Merge branch 'cj_fix' into 'master'

Update cj

See merge request !12

requirements.txt

 --index-url https://pypi.clarin-pl.eu/simple/
 lpmn_client_biz
-clarin-json
+clarin-json>=0.7
 nlp-ws
 regex==2020.10.28
 Babel==2.8.0