chore(release): 1.3.1

chore(release): 1.3.0

chore(release): 1.2.2

chore(release): 1.2.1

chore(release): 1.2.0

chore(release): 1.1.1

chore(release): 1.1.0

Enable tree-to-tree dragging

chore(release): 0.1.21

Inserting nodes from external source made possible by cpunion, NourSa…

…mmour and stephenc222