httpcache: allow to import submodules within packages as HTTPCACHE_DBM_MODULE setting.
httpcache: added tests for custom dbm module.

And removed the break in the line to improve readability as there
is no strict 80-chars line width convention.
tests: dummydbm.error should be KeyError.
Merge pull request #234 from darkrho/httpcache-dbm-module-fullpath

allow to use full path in HTTPCACHE_DBM_MODULE setting
Fix typo labeling attrs type bool instead of list
Merge pull request #235 from whodatninja/patch-1

Fix typo labeling attrs type bool instead of list
remove scrapyd, it was migrated to its own repository
update travis-ci conf
get scrapy version from package data
add PHONYs so build does not match build/ path
Fix url_has_any_extension bug
Merge pull request #241 from zuhao/master

Fix url_has_any_extension bug
reverted previous changed as it broke tests