Fixed CuDNN loading crash on .NET Core

Merge pull request #92 from dariooo512/master

Adding catch case for handling FileNotFound exception when using dll from .NET Core

C# 7.3 update

• Code refactored to use the new C# 7.3 features
• System.Memory assembly updated to the latest 4.5.1 version
• NuGet packages updated

Batch normalization layers

• Added batch normalization layers
• APIs refactoring and improvements
• Bug fixes

Computation graph network, new APIs

• Added computation graph network type
• New INeuralNetwork and IDataset APIs
• Json metadata serialization and Clone APIs fixed for cuDNN layers
• General bug fixes, code and performance improvements

New APIs, optimizers, datasets and more

• New optimizers added (Adam, AdaMax, RMSProp, Momentum and more)
• MNIST, CIFAR-10 and CIFAR-100 datasets added
• New APIs to partition a training dataset
• Added new distance-based accuracy tester
• APIs refactoring and improvements
• Bug fixes and speed optimizations

New images loading APIs, minor fixes

• Added new APIs to parse a dataset from a collection of images
• Code refactoring
• Minor bug fixes and improvements

NuGet package available

• NeuralNetwork.NET is now available as a NuGet package here
• Added new IDataset APIs
• Added new AccuracyTester option
• APIs refactoring, code improvements
• Minor bug fixes

First stable release

• First stable release with all the main features implemented