HH-47815 fix bug in write_error and add tests
HH-47074 new stages logging
Merge remote-tracking branch 'origin/HH-47074' into EXP-12780
release 2.21.16 [an.sumin@hh.ru]
HH-47815 fix logging levels
Merge remote-tracking branch 'origin/HH-47815' into EXP-12789
release 2.21.17 [an.sumin@hh.ru]
HH-47330 add fail_on_error kwarg to MicroHandler HTTP client methods
HH-47330 add xsl syntax error test
HH-47330 update docs
fix tests with lxml >= 3