I just released Subspace (http://jpbetz.github.io/subspace/), a vector/matrix library for working with OpenGL in Scala into maven central (http://search.maven.org/#artifactdetails%7Ccom.github.jpbetz%7Csubspace%7C0.1.0%7Cjar). It's opensourced with the Apache 2.0 license.
It's loosely based glm and included swizzle operators and some other GLSL based features. It's mainly intended to be used with LWJGL.
More details at:
http://jpbetz.github.io/subspace/
-Joe
Nice! Haven't used Scala before myself but it is on the very long todo list I've been growing.
By the way, feel free to lift any functions you like from JOML, my Java maths library for LWJGL and incorporate it into your library. There's a thread for it below this one somewhere.