* delete unused ShortBuffer
* convert IntBuffer to int[] in the Atari2600 core
* remove IntBuffer from NES mappers, and delete class
* convert ByteBuffer to byte[] in atari 2600 mappers
* remove ByteBuffer usages in NESHawk, remove ByteBuffer class
* remove Buffer.cs
* remove IDisposable from NES.NESBoardBase
* remove Dispose from Atari2600 MapperBase, note, it wasn't event being called
* Use expression bodies in Emulation.Cores, and a few other misc cleanups
* remove unused usings in Emulation.Common
* cleanups in Tables_Direct.cs
* some cleanups in nes boards - redundant code
* remove some redundant array initializers in Emulation.Cores
* cleanup AmstradCPC.Controllers
* use object initializers in a lot of places
* nes mappers - remove disch's notes comments in favor of the nesdev wiki link
* cleanup CdtConverter.cs, mostly use of object initializers
* remove redundant .ToString() calls in Emulation.Cores
* using var in Emulation.Cores
* AmstradCPC/ZXSpectrum - simplify some linq, tabs instead of spaces, a few other misc cleanups
* Use null-propagation in Emulation.Cores
adelikat