Added test to reproduce #449.
Recreated SlugHandler
Added additional slug handler tests
Support Reordering the Whole Tree

-Allow reorder() to take a null $node, such that root nodes can be reordered too. Before, if a root node was provided, it's children and their siblings would be reordered, but the root node and its sibling's wouldn't be rearranged.
-Add a reorderAll() convenience method.
update mongodb vendors to latest
update orm vendors to latest
new yaml parser version incompatibilities, will need to adapt yaml driver
update sortable doc, based on note on the blog
[README] add uploadable
Merge pull request #489 from dbu/patch-2

[README] add uploadable
Fix grammar and spelling
Merge pull request #491 from jsjohns/patch-2

Fix grammar and spelling
Fixed issue #481

NestedTree Repository persistAs[...]Sibling: set correct parent
Moved one line
Removed PHPStorm File
Merge branch 'issue_481' into treeslughandler
Removed unnecessary call
Merge branch 'issue_481' into treeslughandler
Added test for issue #351
Merge pull request #492 from cevou/issue_481

Fix for issue 486