0.3.0 from NuGet throwing NotSupportedException on negate function call

[gandalfh]

This code behaves as expected on version 0.20.5 from NuGet (https://www.nuget.org/packages/NumSharp/)

var ones = np.ones((10, 1));
ones.negate();

But after upgrading to 0.3.0 a NotSupportedException is thrown:

at NumSharp.Backends.DefaultEngine.Negate(NDArray& nd)
at NumSharp.NDArray.negate()

[Nucs]

Related to #447

[Nucs]

This has been fixed. The negate() method now works correctly:

var ones = np.ones((10, 1));
ones.negate();  // Works

Resolved via #600, #602, #603, #596.