Log Message:
py-anytree: updated to 2.7.2

2.7.2:
Improve Documentation

2.7.1:
Improve Coverage

2.7.0:
Speed improvements
Add trick multidim
Clarify use of get_attr
Fix iterator protocol
Extend documentation
Remove slots
Fix escape issue
Fix issue with non-strings in node names
Add UniqueDotExporter
Fix typos
Speed up searching with optional fastcache
Remove python 2.6 testing
Add python 3.7 testing