Updated v1.2.0b release notes.

Author: seidewitz

org.modeldriven.fuml/doc/release-notes/fuml-1.2.0b.md

@@ -7,7 +7,11 @@ This is a production maintenance release of the fUML Reference Implementation.
 
 The current base release for the fUML Execution Engine is v1.2.0, conforming to v1.2.1 of the [fUML Specification](http://www.omg.org/spec/FUML/1.2.1). The v1.2.0b maintenance release builds on the v1.2.0a maintenance release (see the [v1.2.0a Release Notes](./fuml-1.2.0a.md)).
 
-This maintenance release resolves the following issue related to the implementation of the event-handling behavior of an object activation, as tracked in our issue management system on GitHub (see https://github.com/ModelDriven/fUML-Reference-Implementation/issues). This is a change to the fUML execution engine, but there is no corresponding OMG issue, because the bug being fixed is specific to the Reference Implementation.
+This maintenance release resolves the issues listed below, as tracked in our issue management system on GitHub (see https://github.com/ModelDriven/fUML-Reference-Implementation/issues). These are changes to the fUML execution engine, but there are no corresponding OMG issues, because the issues being resolved are specific to the Reference Implementation.
+
+This release also includes the resolution of the following OMG issue, which was part of fUML 1.2, but was not properly implemented in v1.2.0 of the Execution Engine.
+
+[FUML 12-11](http://solitaire.omg.org/issues/task-force/FUML12#issue-16436) (18362) Problem with ActivityExecution::terminate
 
 The full list of open fUML issues is available at http://solitaire.omg.org/issues/task-force/FUML13.
 
@@ -18,3 +22,7 @@ No changes to the XMI Loader/Infrastructure have been made in this maintenance r
 #### Bug Fixes
 
 [Issue #28] - Problem starting the behaviors of a multiply classified active object
+
+#### Improvements
+
+[Issue #29] - fUML.Library and fUML.Test packages are only used for builtin tests