[#744] Ensure domain is not None before building regex
[#744] Test for allowed domains including NoneTypes
Document signal "request_scheduled"
Merge pull request #746 from Digenis/doc

Document signal "request_scheduled"
minor change to request_scheduled signal doc
print spider name even it has no contract tests when -v is specified
Merge pull request #745 from crlane/cl/offsite-middleware-bugfix

Cl/offsite middleware bugfix
Merge pull request #752 from tpeng/slightly-improve-contract-tests

print spider name even it has no contract tests when -v is specified
Merge remote-tracking branch 'origin/master' into lxmlextractor
Revert to etree.HTMLParser

Copy some code from lxml.html