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Added a bunch of blank useful methods for further implementation.
Slightly changed package name and descripton.
Slightly changed package name and descripton.
Some changes
Roots() method returns proper collection of root models now
moved models to subdirectory , updated composer requirements for further applying the tests
moved models to subdirectory , updated composer requirements for further applying the tests
added some unit tests, fixed bug when removing child
added some unit tests, fixed bug when removing child
more tests and methods fixes
test and fixes
new tests implemented
proper reordering when inserting or moving nodes