v0.4.3

AbstractTrees v0.4.3

Diff since v0.4.2

Closed issues:

• Tree traversal really slow due to ridiculous ammounts of compilation (#117)

Merged pull requests:

• Fix the printnode override feature & add test for it (#111) (@YingboMa)
• Improve trait docstrings (#114) (@mortenpi)
• atonement for compiler abuse (type stable cursors!) (#120) (@ExpandingMan)