Maxim Maltsev

TypeError: Cannot read property 'kind' of undefined on building an app with the library

7

First of all, great library. I was using it for a while but recently running `ng build --prod` started yielding the following error: ```bash ERROR in ./node_modules/angular-feather/fesm5/angular-feather.js Module build failed...

Revision of hierarchy classes naming

5

Recently I noticed that some of the hierarchy classes in the [STO](https://github.com/i40-Tools/StandardOntology/blob/master/sto.ttl) have different names but seem to describe same things, e.g. [rami:LifecycleStatus](https://github.com/i40-Tools/StandardOntology/blob/bc8b4c09371c62eed6fc9a9b67fb21a7774d55b3/sto.ttl#L762), [rami:LifeCycle_Status](https://github.com/i40-Tools/StandardOntology/blob/bc8b4c09371c62eed6fc9a9b67fb21a7774d55b3/sto.ttl#L768) and [rami:Lifecycle_Status](https://github.com/i40-Tools/StandardOntology/blob/bc8b4c09371c62eed6fc9a9b67fb21a7774d55b3/sto.ttl#L758). Therefore, I propose to...