Incompatibility with jasmine.isSpy

[hmil]

The method jasmine.isSpy attempts to access "well known" members on omnimock:

https://github.com/jasmine/jasmine/blob/89331bb1bbda9a86f8eea7db43ee8605b414bff1/src/core/base.js#L347

Add and to the properties whitelist.

[hmil]

To investigate: just return undefined on unexpected property accesses.

[hmil]

Another workaround for this is to stop using jasmine expect since it's crap and instead expose an equivalent feature directly from omnimock.