Replace beautiful soup 4 with Python standard library

[cn-kali-team]

I need to install lxml support when I install beautiful soup 4. I think a simpler method should be used to parse HTML, so I submitted a branch without beautifulsoup4

[tristanlatr]

Hi, @cn-kali-team ,

Thanks for the PR, honestly I don't know what to think about parsing the HTML with the std lib...
Beautiful soup can be very useful when dealing with half-broken HTML. Maybe this should be the behaviour when beautiful soup cannot be imported ?

Does this fixes #48 ?

Thanks again!

[tristanlatr]

We provide a way to use python-Wappalyzer without lxml. This should only be used only lxml cannot be installed, the standard library DOM parser will fail on broken HTML, resulting in incomplete results.

It can be used by installing python-Wappalyzer with pip option --no-deps. Then install the required packages manually (pip install requests aiohttp cached_property dom_query pytest).

Thanks @cn-kali-team