hierarchicalCheck and propagateCheckEvent do not work through a method

[avga2000]

hierarchicalCheck and propagateCheckEvent work properly when you check some node manually, however it does not when you try to check the node through a method.

[avga2000]

I solved this by using method toggleNodeChecked instead of checkNode

[skateman]

Hi, could you please post a reproducer onto jsfiddle or codepen? Thanks

[vzlatkin]

same as issue #45