Note: APIs may change Aspirin is meant to be a .swc that you link against when building a swf, not a runtime shared library (RSL). We may modify or delete methods in incompatible ways in order to improve the library. Typically we will deprecate a method for a while first, so it should not be difficult to keep up with changes.
Integration into a Maven- or Ivy-based build is easy. Add a dependency on com.threerings:aspirin:1.13. Aspirin is published to Maven Central, so you need not add it to your local Maven repository.
You can also download aspirin-1.13.swc.
You can also build it from source and incorporate it into your build in any way that suits your fancy.