Try out moving to latest copy of bikeshed to avoid git checkout error

Also trying latest html5lib

.travis.yml

@@ -7,12 +7,8 @@ before_install:
 - chmod 755 ./.deploy-output.sh
 install:
 - pip install --upgrade setuptools        
-- pip install pygments cssselect 'html5lib==0.9999999' lxml
+- pip install pygments cssselect html5lib lxml
 - git clone --depth=100 --branch=master https://github.com/tabatkins/bikeshed.git ./bikeshed
-# Use stable copy of bikeshed
-- pushd ./bikeshed
-- git checkout ef1ed8caf38d3c56a981cced49fd7d64f7fd4ed4
-- popd
 - pip install --editable ./bikeshed
 # Use cached copy of bikeshed data files to give consistent builds
 #- bikeshed update