HH-44215 pep8 and compatibility fixes
HH-44215 remove __init__.py side effects
Merge remote-tracking branch 'origin/HH-44215' into EXP-11581
release 2.20.4 [an.sumin@hh.ru]
HH-44204 Handle request exceptions in result object
Merge remote-tracking branch 'origin/HH-44204' into EXP-11631
release 2.20.5 [an.sumin@hh.ru]
HH-44247 add --app parameter to frontik script
HH-44122 add pep8 test and fix others
Merge remote-tracking branch 'origin/HH-44247' into EXP-11631
release 2.20.6 [an.sumin@hh.ru]
new debug with Jinja2
new stages, log request_time instead of app total time
add tests for debug page
add coverage to tests run
improve frontik.testing
drop python 2.6
add new tests