Allow to specify the quotechar in CSVFeedSpider
added a test-case for wrong quotechar
DOC simplify extension docs
DOC document download_timeout Request.meta key and download_timeout spider attribute.
Merge pull request #893 from kmike/less-ads

[MRG] DOC simplify extension docs
Compatibility with .15 leftover
Merge pull request #925 from Digenis/master

a leftover for.15 compatibility
Merge pull request #898 from scrapy/download-timeout

[MRG] DOC document download_timeout
comma instead of fullstop
Merge pull request #882 from ahlen/feature/csvfeed-quotechar

[MRG+1] Allow to specify the quotechar in CSVFeedSpider
Update install.rst

fixes #937
pywin32 is required by Twisted. closes #937

see:
* http://twistedmatrix.com/trac/ticket/6032
* https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2028
Afterwords->Afterwards
typo
Update docs copyright year range
Merge pull request #944 from JeffPaine/patch-1

Update docs copyright year range
avoid download large response

introduce DOWNLOAD_MAXSIZE and DOWNLOAD_WARNSIZE in settings and
download_maxsize/download_warnsize in spider/request meta, so
downloader stop downloading as soon as the received data exceed the
limit. also check the twsisted response's length in advance to stop
downloading as early as possible.
add 2 more test cases and minor doc fixes
Force to read DOWNLOAD_TIMEOUT as int (for example to pass using
environment variable)
pin mitmproxy 0.10.1 as >0.11 does not work with tests