mvn test has error 401 (access denied) for stk-parts component

[larham]

Running mvn test on a freshly cloned repo yields:

[ERROR] Failed to execute goal on project adam-astrodynamics-stk: Could not resolve dependencies for project org.b612foundation.adam:adam-astrodynamics-stk:jar:2.0-SNAPSHOT: Failed to collect dependencies at org.b612foundation.adam:stk-parts:jar:2018r3: Failed to read artifact descriptor for org.b612foundation.adam:stk-parts:jar:2018r3: Could not transfer artifact org.b612foundation.adam:stk-parts:pom:2018r3 from/to github (https://maven.pkg.github.com/B612-Asteroid-Institute/stk-parts): authentication failed for https://maven.pkg.github.com/B612-Asteroid-Institute/stk-parts/org/b612foundation/adam/stk-parts/2018r3/stk-parts-2018r3.pom, status: 401 Unauthorized -> [Help 1]

Is the intent to keep the stk-parts component available only to authenticated users? In that case, perhaps indicate so in the readme?