Amend scrapy open_in_browser tool.

[bulatbulat48]

Fixes #91

The error:

open_in_browser(po.response)
Traceback (most recent call last):
  File "/Applications/PyCharm.app/Contents/plugins/python/helpers/pydev/_pydevd_bundle/pydevd_exec2.py", line 3, in Exec
    exec(exp, global_vars, local_vars)
  File "<input>", line 1, in <module>
  File "/Users/bulat/PycharmProjects/zyteprojects/envs/web-poet/lib/python3.10/site-packages/scrapy/utils/response.py", line 101, in open_in_browser
    raise TypeError("Unsupported response type: " f"{response.__class__.__name__}")
TypeError: Unsupported response type: HttpResponse

[codecov]

Codecov Report

Merging #154 (fe84c57) into master (f8c39ef) will increase coverage by 0.02%.
Report is 1 commits behind head on master.
The diff coverage is 88.88%.

❗ Current head fe84c57 differs from pull request most recent head 1d13338. Consider uploading reports for the commit 1d13338 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #154      +/-   ##
==========================================
+ Coverage   85.36%   85.38%   +0.02%     
==========================================
  Files          14       14              
  Lines         779      787       +8     
==========================================
+ Hits          665      672       +7     
- Misses        114      115       +1     

Files Changed	Coverage Δ
scrapy_poet/utils/__init__.py	97.61% <88.88%> (-2.39%)	⬇️

[Gallaecio]

Python 3.7 is end-of-life, so rather than looking for a compatible approach, feel free to modify the code base (tox.ini, setup.py, README) to drop 3.7 support.

[bulatbulat48]

@Gallaecio fixed in #155 :)

[Gallaecio]

Now that tests pass, I think the only missing piece is docs. I am not sure where to mention it, though. Maybe a new, short section in https://scrapy-poet.readthedocs.io/en/stable/intro/pitfalls.html , just so that we can link to it when people run into the issue?

[bulatbulat48]

Now that tests pass, I think the only missing piece is docs. I am not sure where to mention it, though. Maybe a new, short section in https://scrapy-poet.readthedocs.io/en/stable/intro/pitfalls.html , just so that we can link to it when people run into the issue?

@Gallaecio added help section, please review.