Do not silence download errors when request errback raises an exception
Do not log IgnoreRequest exceptions as download failures
Update the second code example

Update the second code example to reflect the last change in the first example.
Handling inconsistencies among Twisted releases
Merge pull request #406 from nopper/master

Handling inconsistencies among Twisted releases
updated required twisted version to 10.0
document bindaddress request meta
allow to set source and destination fields in files and images pipelines, and added tests
Merge pull request #409 from kalessin/imagesfield

allow to set source and destination fields in files and images pipelines, and added tests
Adds HTTPS support to the MockServer.
Merge pull request #410 from duendex/httpsMockServer

Adds HTTPS support to the MockServer.
added pypi version badge to README
fix regression on lazy evaluation of start requests
Add 0.18.3 release notes

Conflicts:
	docs/news.rst
remove minor reference to 'scrapy server' command
Merge pull request #400 from irgmedeiros/patch-2

Update the second code example
.remove_namespaces(): remove namespaces on elements' attributes
remove no longer existent examples from doc_files used in bdist_rpm. closes GH-417
robotstxt mid multi spider support removed
httpauth mid multispider support removed