Fixed mapping for overriden properties.

[vacero]

I detected a problem when trying to map an overriden property in a child class. The problem is that GetProperty method throws an Exception when trying to find the Property by name because it is defined in the parent and in the child classes, it's ambiguous.

The proposed solution is to just use the ´memberExpression.Member´ as the PropertyInfo.

All tests were run without problems.

[anisimovyuriy]

Dear viacgo,

I appreciate your effort and contribution to Expressmapper! Just one thing could you please provide unit test for it?

Also you can apply the same change for "Function" method

Thanks a lot, Yours Yuriy

[vacero]

Hello @anisimovyuriy.

I added a test for this. Please check.

If I need to change anything else, let me know.

[anisimovyuriy]

Dear viacgo,

Thanks a lot for your contribution and improvements to Expressmapper!

Gratefully Yours, Yuriy