stefankroes/ancestry — pull request #183 by mp-dhorsak (2014-03-19 16:05:39+00:00)
Title: allow ids that matches word characters

Simple change in the code that allows using string id columns with other than numerical characters. With this change it is pretty easy to create e.g. geography tree that has ISO 3166-1 alpha-3 + regions with custom code. Or language trees, where a root can be e.g. English (en) but its children can have region information like US English (en_US).