openscd
Support later nsdoc revision
Is your feature request related to a problem? Please describe.
As a user of OpenSCD I want to use the latest nsd/nsdocs file.
At present it seems that we are looking for a match to the files in packages/openscd/public/xml which (at least one) is out of date.
Users are trying to use later versions and finding that they cannot be used. https://openscd.zulipchat.com/#narrow/channel/447335-general/topic/NSDocs/near/484782598
Describe the solution you'd like
OpenSCD needs a more flexible approach and the latest nsd files should be included.
Requirements
Ideally, support arbitrary version, revision and release in the OpenSCD code and then periodically we update the nsd files.
How backwards compabible is the NSD/NSdoc in general? of did the IEC made a lot of changes in the latest NSD(oc) files?
Maybe we can only detect schema changes, once the schema of the NSD(oc) files change, we need to develop something for sure.
