Fixed #441.
fixes dynamic itemclass example usage of type()
Merge pull request #603 from barraponto/dynamic-itemclass-docfix

fixes dynamic itemclass example usage of type()
rename attribute to match conventions used for XXX_DEBUG settings (in autothrottle and cookies mw)
remove no longer used setting: MAIL_DEBUG
Merge pull request #602 from Blender3D/email

Added a mimetype parameter to `MailSender.send`
Update httperror.py

Log ignored HTTP pages when the response code is not allowed or not configured to be handled.
Update scrapy command line doc with additional scrapy parse options
remove unused setting: DOWNLOADER_DEBUG
Added missing word in practices.rst
Clarify MapCompose documentation
Fix some typos, whitespace and small errors in docs
Merge pull request #618 from allait/master

Fix some small typos and errors in docs
Generalize the file pipeline log messages so they are not specific to downloading images.
Merge pull request #622 from ajw0100/generalize-file-pipeline-log-messages

Generalize the file pipeline log messages
SpiderMW doc typo: SWP request, response
Running lucasdemarchi/codespell to fix typos in docs
Running lucasdemarchi/codespell to fix typos in SEPs
Running lucasdemarchi/codespell to fix typos in code
Merge pull request #628 from barraponto/codespell

Using lucasdemarchi/codespell to fix typos