v1.10.0 - Rare object properties

Thanks to @jramstedt , some rarer object property use-cases are now uncovered and possible.

• Fix for #64 now allows NULL_TRIGGER without an action to specify a condition
• With #62 , receptacles like 9/1/x (with exceptions) and 9/4/x now have an object condition and a trigger message. Exceptions are for antenna panels and retinal scanners, which have dedicated code paths anyway.