LINQ methods respect the configured casing

[victorr99]

The ExpressionParser was updated with a new method allowing case insensitive compares whenever this was configured in the ParserConfig.

The method CanonicalContains performs a case insensitive check whenever IsCaseSensitive was set to false. It also updates the provided needle parameter to the actual found value. Thus a match on max will be translated to Max.

This fixes issue #967

[StefH]

And will this not break any code where a Class has a property max?

Like

public class X
{
  public string max { get ; set; }

   public string MAX { get ; set; }
}

Maybe add a unit test for this.

[StefH]

no need to use ref

just do:

if (_parsingConfig.IsCaseSensitive)
{
    return haystack.Contains(needle);
}

return haystack.Any(s => string.Equals(s, value, StringComparison.OrdinalIgnoreCase));

[victorr99]

I've changed the method to just Contains. It indeed works without using ref, so I've removed that.
I've tried to add some unit tests with a max property. Is this what you had in mind?