org.eclipse.jdt.annotation;bundle-version="[1.0.1,2.0.0)" due to
https://bugs.eclipse.org/bugs/show_bug.cgi?id=426582 or
https://bugs.eclipse.org/bugs/show_bug.cgi?id=434033.

Optional org.objectweb.asm which is apparently req. by newer Xtext
versions

Signed-off-by: Michael Vorburger <mike@vorburge>