Removed possible double hiding in tree.
Added option not to hide removed node(s) for tree nodes.
Extended {hide: false} option to work with binary trees.
Added 'own' child function for binary nodes.
Merge branch 'master' of https://github.com/vkaravir/JSAV into removeoptions
Old root and _edgetoparent of new root are now hidden by default.
Put {hide: false} option to the doc
Added support for removing root node with remove function
Fixed attributes for new and old root in treeproto._setrootnode
Fixed bug with hiding old root.
Quick fix for extra edges. Edges are not created for nodes with value jsavnull.
New edges now grow into place instead of flying into place.
Merge pull request #110 from X455u/hideoptions

Hide options for removed/replaced nodes
Merge pull request #111 from X455u/rootfix

Added support for removing root node with remove function
Merge pull request #112 from X455u/treefix

Fixed attributes for new and old root in treeproto._setrootnode
Merge pull request #114 from X455u/edgefix

Fixes to edges
Fixed bintreenode.addChild()