Add Node.path column.  Allows queries based on (unescaped) path.
Fix error in CHANGES, and add migration note.
Fix accidental Python 2.6 breakage.
Attempt to increase maximum index size with MySQL
Revert commit that didn't help with Travis' MySQL :-(
Set length of Node.path to 767 so it fits within MySQL's default constraints.
Disable Node.path index altogheter because some configs (Travis) don't support it
Catch two more edge cases for setting path.

1. Parent (or parent's parent etc) might not be part of object tree yet.

2. Parent might not have a name yet.
Merge pull request #313 from Kotti/path-index

Add Node.path column.  Allows queries based on (unescaped) path.
Release 0.10a2
Back to development
Fix a bug with Node.path and detached parents
Do not flush within Node.path event handlers.  And upgrade SQLAlchemy.
Fix deprecation warnings with regard to Pyramid's custom_view_predicates and set_request_property.
Release 0.10a3
Back to development
Allow 'system.Authenticated' to be used as a role in workflow.zcml.
Added missing fixed version requirements.
pep8-ish fix
Avoid waking up all columns in this migration script.