Inconsistent handling of property name / value casing between this package and your property package

[janigbg]

I am working with an application that uses both this package and your property package.

We have noticed that the use of casing in comparisons is different between these packages.

property package handles casing in the following way (as I see it):

• Match property names case sensitive when handling property filters / sets
• Match string property values case insensitive when evaluating property filters

This package handles casing in the following way:

• Match property names case insensitive when handling property filters / sets
• Match string property values case sensitive when evaluating property filters

As I see it the handling of casing is a bug in this package, but please correct me if I am wrong.

I can provide a PR for this package if you agree that it should match the behaviour of the property package.