I'm submitting a ...

• bug report
• feature request
• support request => Please do not submit support request here, see note at the top of this template.

What is the current behavior?

Upgrading allure-pytest on deprecated python versions (such as 2.7 and <3.5) causes test run failures.

What is the motivation / use case for changing the behavior?

pip won't let me install a version of library which won't work with my current setup.

Please tell us about your environment:

allure-pytest==2.9.43
pytest==4.6.9

Other information

Stumbled upon an issue with allure not being able to generate reports if test have invalid utf8 bytes in it's pytest`s parametrize mark (eg. \x80\x81\x82)

Decided to update package as i've seen some issues with unicode decoding marked as fixed in newer versions.
After updating allure-pytest via:
pip install allure-pytest --upgrade can no longer run tests due to error with type annotations implemented in #533

Does allure-python has dropped python2 support?