sortable behavior: when scope column is a FK and onDelete="setnull", removing related object now moves all objects to the end of null scope
sortable behavior: improved shiftRank() to not require $first node parameter
sortable behavior: changed moveRelatedObjectsToNullScope() method to use improved shiftRank() method
sortable behavior: changed moveRelatedObjectsToNullScope() to use already existing getMaxRank() method and fixed bug in shiftRank()
sortable behavior: removed getting $con in moveRelatedObjectsToNullScope()
Merge remote-tracking branch 'upstream/master' into sortable_scope
Merge remote-tracking branch 'upstream/master' into sortable_scope
Merge remote-tracking branch 'upstream/master' into sortable_scope
Fixed an issue with unnecessary queries for one-to-one related objects.
Missed the param on the method when patching
Added the missing default from patching
fix performance issue loading references on save
Enable identifier quoting
Active identifier quoting by default, and fix it

See: https://github.com/propelorm/Propel/pull/325
Fix test files (password introduced by error)
Fix single inheritance class choise error when orbject is create by findOneOrCreate function
Fix wrong escape of $con
Merge pull request #497 from real-chocopanda/fix-single-table-inheritance-findOneOrCreate-bug

Wrong object return by findOneOrCreate function in single table inheritance
Fix a few typos
fix #500 update composer.json force phing 2.4.12

Fix composer to use phing 2.4.12
this fix #500