* Fix strftime format string

Lines 28 and 29 that were using `.strftime('%s')` where it should be written as `.strftime('%S')`. This error would make twint fail with an `Invalid format string` when using time-related configurations like `Since` and `Until`.

* Change strftime to timestamp

As we are looking for the timestamp version of the provided date/time string, using `timestamp()` should be more straightforward and shouldn't create any incompatibility issues as twint already requires Python >= 3.6

Enables twint to work with Flask

Select the working of the workaround's UA only for tweets, for followers/following use the old method that still works

* update README with gtranslate example (cli and python)

* switch to fork py-googletrans

* update README.md

Removed comment

* add py-translate, update sqlite3 insertion with translations

* add cli argument for translate feature

* add translation to json

* fix output formatting

* add language detection

* add translation source and destination

* extend timeout to 120

* fix tweet and write_meta

* update elasticsearch, tweet exception

* add new arg for destination language for translations

* fix indent

* fix types for elasticsearch

* fix try/expection for translate func

* ignore mysql.py from commits

* fix error

* fix attr names, update panda

* Upgrade to v2.1.8

#580

It seems that with python3.8 Twint goes timeout, so as of now better push to PyPI only 3.6 and 3.7

Update to HTTPS #567