TensorTest: Added Unit tests for more coverage, reformatted file.
c_api.tensor: Added overloads for TF_NewTensor that does not have deallocator parameters.
BaseSession: Removed disposal immediately after TF_SessionRun call.
c_api.DeallocatorArgs: Added DeallocatorArgs.Empty

Attempt to provide meta-packages for TensorFlow.lib

Override TensorShape.ToString().

Performance optimization, refactoring and revamping.

Fix typo in readme.md

- Fixed all test cases to use using(Buffer)
- Fixed all test cases to explicitly specify session

They are managed by GC.

PowerShell script is apparently malfunctioning to extract files from the linux
archives.
More testing (and fixes) will follow.

Let's keep things clean and neat.