Add @achingbrain's IOBoard to IO Plugins list

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
Update Servo from last stash; adds value property

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>
v0.7.46

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>