[WIP] Basic mtgjsonv4 support (#3458)

* Basic mtgjsonv4 support

* Fix set type

* [WIP] Oracle: use zx instead of zip

* clanfigy fixes

* Fix reading last block of xz

* Added back zip support

* [WIP] adding xz on ci + fixes

* typo

* resolve conflict

* Make gcc an happy puppy

* test appveyor build

* appveyor maybe

* Appveyor: add  xz bindir

* Update ssl version (the old one is not available anymore)

* Windows is a really shitty platform to code on.

* test vcpkg

* again

* gosh

* nowarn

* warning 2

* static

* Maybe

* cmake fix

* fsck this pain

* FindWin32SslRuntime: add vcpkg path

* Appveyor: cache support, force usable of openssl from vcpkg

* updated as suggested

* ouch

* Import card uuids and expose this property as !uuid! for card image download

* Minor style fixes

* address changed URL

README.md

@@ -87,8 +87,9 @@ Dependencies: *(for minimum requirements search our [CMake file](https://github.
 - [protobuf](https://github.com/google/protobuf)
 - [CMake](https://www.cmake.org/)
 
-Oracle can optionally use zlib to load zipped files:
+Oracle can optionally use zlib and xz to load compressed files:
 - [zlib](https://www.zlib.net/)
+- [xz](https://tukaani.org/xz/)
 
 To compile: