RedBlack Tree: provide InOrder function

v0.5.1

RedBlack: provide InOrder function

RedBlack Tree: allow arbitrary keys

Merge pull request #6 from obitech/rb-keys

RedBlack: Allow arbitrary keys

Provide Successor function for Interval Tree

Merge pull request #5 from obitech/gaps

Interval tree: add Successor function

Provide InOrder function for Interval Tree

v0.4.0

Interval tree: rename type, provide InOrder function that yields all …

Provide FindExact function for Interval Tree

v0.3.1

interval: provide FindExact function

Update module path

From obitech/go-tree to obitech/go-trees

Implement Interval Tree

Merge pull request #4 from obitech/interval-tree

Add Interval Tree

Implement BST, Red-Black Trees

Merge pull request #1 from obitech/redblack

Add red-black Tree