Some additional repos to consider:
thisisneal/Quaternion — Go library to handle quaternion operations, especially those related to rotations.
nosferatu500/go-quaternion — Little package for work with Quaternion inside golang.
go-quaternion — go package for multiplying, rotating and interpolating arrays of quaternions (Experimental)
Once a week...... I send out a list of most interesting Go libraries and apps.
Want to get it?