Project modernization (#630)

* Fixed boats falling and a TP glitch #266

* Replaced every C-style cast with C++ ones

* Replaced every C-style cast with C++ ones

* Fixed boats falling and a TP glitch #266

* Updated NULL to nullptr and fixing some type issues

* Modernized and fixed a few bugs

- Replaced most instances of `NULL` with `nullptr`.
- Replaced most `shared_ptr(new ...)` with `make_shared`.
- Removed the `nullptr` macro as it was interfering with the actual nullptr keyword in some instances.

* Fixing more conflicts

* Replace int loops with size_t and start work on overrides

Minecraft.Client/MemTexture.cpp

@@ -15,7 +15,7 @@ MemTexture::MemTexture(const wstring& _url, PBYTE pbData,DWORD dwBytes, MemTextu
 	//loadedImage=Textures::getTexture()
 	// 4J - remember to add deletes in here for any created BufferedImages when implemented
 	loadedImage = new BufferedImage(pbData,dwBytes);
-	if(processor==NULL)
+	if(processor==nullptr)
 	{
 
 	}