upgrade pandas

[M-Igashi]

pandas stopped supporting python2... it'd be better to move the master to python3...

Description

TESTING STAGE

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] I have read CONTRIBUTING.md
• [x] I fully understand Github Flow.
• [ ] My code adheres to the code style of this project.
• [ ] I have updated the documentation in /docs if I have changed the config, arguments, logic in how the bot works, or anything that understandably needs a documentation change.
• [ ] I have updated the config file accordingly if my change requires a new configuration setting or changes an existing one.
• [ ] I have tested the bot with no issues for 24 continuous hours. If issues were experienced, they have been patched and tested again.

[rnevet]

Why is this a Breaking Change?

[M-Igashi]

no it's not, sorry :D

[rnevet]

Is it tested? what does the upgrade bring? Regarding Python 3 - there is some work in the matter, but I'm afraid that enthusiasm is down with the lending rates.