Add "a.p.push" (omitted before)
psSet event type bugfix: move ScalarSynthControl branch earlier

The ScalarSynthControl branch never executed previously, because a
ScalarSynthControl is also a kind of SynthDefControl... so the
SynthDefControl would try to handle it too, and ignore the change.

Solution: Put the more specific branches first.
Remove noexport tags (mistakenly checked in earlier)
Testing examples
Add Part V to full-article.org
New content on proxies --> SynthDefs