Provide utilities to filter out property observers

[PK1A]

As of today the algorithm used to observe object changes adds additional properties ("+json:observers", "+21:oid", splice2: function). If we need to add additional properties to objects we should provide, as part of the framework, utilities that would help filtering out those properties as we will need them every time objects used in templates need to be transferred "out of the #space" world (xhr calls, handing objects to 3rd party libraries etc.).

The utility methods I'm after are:

• getting object keys
• getting object keys + values

[benouat]

Or at least on the browsers that support it we should define them using Object.defineProperty and set them to be enumerable: false so that we don't even need such a utility

[No-On]

Hello,

This is an important fix for me, each "foreach" brings me these options i dont want

Thx!