Skip property if it has an IgnoreDataMember Attribute

[valorieschwartzdev]

• Include update to NetSerializer test

[RevenantX]

@BassaForte you can use field instead of property and it will be ignored. Why not use that way?

[valorieschwartzdev]

@BassaForte you can use field instead of property and it will be ignored. Why not use that way?

1. Attribute usage is more obvious, easier to read (also, I was not aware that fields are automatically ignored, even after scouring the docs - doesn't seem user friendly).

2. It's more akin to other data annotation (ex. System.Runtime.Serialization.DataMemberAttribute and IgnoreDataMemberAttribute).

3. Coding standards. That's not exactly how fields are intended to be used, anyway, and I should be able to decide which properties are serialized or not.