I’ve published the source code so you can look at the handlers for each device to build your own driver or reuse any of the original custom features which are implemented in a generic way with a fair amount of comments.
While it is on github, the idea at the moment is just sharing the current code. I’ve disabled as much collaboration features as possible 
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If there’s any issue let’s talk about it here. If you have any request, the same. Github does not allow to disable pull-requests but mind I might not accept any.
Hope it is useful for you anyway! As you may have noticed, the source combines all the drivers yet the one for the new firmrware version of STYRBAR is actually published as standalone in the channel so the fingerprint does not fight with existing drivers which use different bindings.
Tagging @lmullineux who asked for the RODRET driver source few posts above, it’s the simplest one by the way. The actual fun is the STYRBAR with all the handling to support the holding arrows message-feast.