fix a possible error in contracts post hook
command with multiple crawlers, fix check command
disable logging for scrapy check
Skipping cookie retrieval for non http requests
Added COMPRESSION_ENABLED setting to enable or disable the HttpCompressionMiddleware

Added COMPRESSION_ENABLE setting to docs

Added COMPRESSION_ENABLED setting to default settings
Merge pull request #359 from rocioar/master

Added COMPRESSION_ENABLED setting
fixed typo to parallel fix on 0.16 branch
correction to description of example XPath retrieval in overview doc
also fetch alternate URLs from sitemaps, see #360
Merge pull request #361 from hmsimha/master

Doc fixes: Minor typo (was fixed on 0.16 branch so I figured it could be on master as well) and an error in the overview doc.
fixed scrapy.utils.gz.gunzip() broken after changes from Python 2.7.3 to 2.7.4
updated release notes and bumped version to 0.18.0
bumped version to 0.19.0
fix contributters list format
tox.ini: disable sitepackages on windows, as a compiler is often not available
adjust http11 pool size to per-domain concurrency
added a python native classes item exporter
Merge pull request #366 from kalessin/exporter

added a python native classes item exporter
minor updates to 0.18 release notes
add docstring to PythonItemExporter