Twitter full text support (280 characters)

[60-hz]

Since 2017, twitter support 280 characters. But for compatibility reason, all texts are truncated to 140 characters by default (with a "..." at end of statuses).

To be able to have all the text, we should add a parameter: tweet_mode="extended" and get the statuses from "full_text" and not "text" like discussed here https://github.com/bear/python-twitter/issues/420

I think this would be easy to do but I failed since my level in Python is poor!

Thanks!