* Huge refactor of KeraLua and 99% cover of Lua 5.3 API.

* Updated missing Lua functions
* enabled XML documentation.

* Update Windows build
* Added Encoding to Lua object
* Update tests to run with the correct path
* Update submodule nlua/lua
* Build native lua BeforeBuild KeraLua.csproj

* Add missing `LuaRegister.cs`

* Remove LuaTests submodule

* Add copy of scripts for tests.

* Fixed OSX native build.
Added packages to git
I know  packages shouldn't be added to git I am adding because sometimes nuget restore isn't reliable.

* Fixed iOS and tvOS build.

* * Remove Headers from .framework

* Fixed WatchOS build

* * Fixed Android build.

* * Fixed tests from command line.

* * Added BuildLua.Linux.targets.


* Update README