Can't be installed on fresh systems, no pandas support

[wernersbacher]

Pandas dropped support for Python2, so it's not possible to use this bot anymore on fresh systems.

[rnevet]

Can you install Pandas version 0.23.4? it's the last version supporting python 2.7.

There was work to migrate the bot to Python 3 which wasn't finished as far as I know.

[vansonlin]

I just cloned the project on a new instance and it works fine. You can probably use pip to get the working pandas.
Where is the python3 migration repo?

[rnevet]

@vansonlin there is a branch and a PR
#539