Update __init__.py

[doko-desuka]

Hi, I recommend these changes:

• Accept-Encoding and Connection are already set by default in Session (the values are 'gzip, deflate' and 'keep-alive' for the speedup, respectively), so they can be kept out.
• The Upgrade-Insecure-Requests header is only used once when the browser asks for an HTML through an insecure (HTTP) connection, so if it's placed in the headers it'd be used on every request (which is suspicious), so maybe keeping it out is better?
• Setting the default headers only once when the user creates this CF session, because if they want to change the headers later on, they're free to do that (if we always override the headers inside request() they won't be able to do that).

[doko-desuka]

On a personal copy I put a flag-checking step to only do one consecutive attempt of the challenge.

In this alternative version (I don't know who the author is), they set the limit at 3 attempts:
https://github.com/a4k-openproject/script.module.openscrapers/blob/master/lib/openscrapers/modules/cfscrape.py#L77

If the answer is right then it's right, I don't know why CF would ask for another try of the challenge.

[Arias800]

Done here : https://github.com/Arias800/CloudflareScraper/commit/d5f4bdc8a04bf528d06dfcc987d2de398af1a29b