Empty interval tree added
Insertions to interval tree
Test suite renamed
Empty 2-dim interval tree
2-dim interval tree can contain single point
Common code extraction
Additional test for 2-dim interval tree
Heap usage instead of stack
Fixed memory leaks
Interval tree can be parametrized by value type
Readme file updated
3-dim interval tree added
2-dim interval tree implemented in interval_tree_dim
1-dim interval tree implemented by interval_tree_dim
Readme file updated
4D interval tree added
Interval tree class renamed
Readme file updated
Minor refactoring
interval_tree_size class moved