Added option to include page body in crawl results

[Mews]

Closes #8

Changes

• Added include_body argument in the Spider class. This is a boolean that defaults to false. When set to true, the body of the crawled pages will be included in crawl_result.
• In Spider.crawl added the code to add the body to crawl_result from soup.html.
• Added a test for this feature.

Right now the body of the page is added regardless of wether it finds links inside it or not! This just felt like the most expectable behavior, but let me know if I should change it. Also there are no verbose prints, I didn't find it necessary but let me know if I should add some 👍

[Mews]

Oh right I guess this new "body" field doesn't match the type hint for crawl_result :P Should it be Dict[str, Dict[str, Union[List[str], str]]]?

[Mews]

@indrajithi I'm not quite sure how to do the type hints for the crawl_result variable now that it has this new body field :/

[indrajithi]

@indrajithi I'm not quite sure how to do the type hints for the crawl_result variable now that it has this new body field :/

self.crawl_result: Dict[str, Dict[str, Union[List[str], str]]] = {} Does this not work?

[indrajithi]

If the type hint for crawl_result is not working, we can just set it to a basic dict or override/suppress checking that case and move on.

[Mews]

Alright I'm on my phone right now but I'll get to it when I get home :+1:

[Mews]

@indrajithi I'm not quite sure how to do the type hints for the crawl_result variable now that it has this new body field :/

self.crawl_result: Dict[str, Dict[str, Union[List[str], str]]] = {} Does this not work?

Nope that's what raised the error on the ci. I'll open an issue about it so that it can be dealt with later.

[Mews]

@indrajithi Ok I just introduced a temporary fix, I set the type hint to Dict[str, Any], so you can rerun the ci and merge if everything passes. I'll open the issue now.