System.Drawing for .NET Core, that really work

This is a .Net Core compatible System.Drawing implementation modified from mono project.
Works on windows and linux.

These system are tested:

These features should work:

Known issues:

How can I get it work?

On windows, just install package ZKWeb.System.Drawing from nuget, nothing else need.

On Linux, except install package ZKWeb.System.Drawing from nuget, you need install libgdiplus.

Ubuntu 16.04 and above:
- apt-get install libgdiplus
- cd /usr/lib
- ln -s libgdiplus.so gdiplus.dll
Fedora 23 and above:
- dnf install libgdiplus
- cd /usr/lib64/
- ln -s libgdiplus.so.0 gdiplus.dll
CentOS 7 and above:
- yum install autoconf automake libtool
- yum install freetype-devel fontconfig libXft-devel
- yum install libjpeg-turbo-devel libpng-devel giflib-devel libtiff-devel libexif-devel
- yum install glib2-devel cairo-devel
- git clone https://github.com/mono/libgdiplus
- cd libgdiplus
- ./autogen.sh
- make
- make install
- cd /usr/lib64/
- ln -s /usr/local/lib/libgdiplus.so gdiplus.dll

No fake strong name is used, will not mess up Asp.Net and OWIN.
Copied all files from mono 4.6.1.13, you will actually compile it without seeing hundreds error
Really tested on linux and really work
You can actually run tests from dotnet test, no joke
- Windows
  - .Net Core Test Count: 1857, Passed: 1517, Failed: 331, Inconclusive: 0, Skipped: 9
  - .Net Framework Test Count: 1869, Passed: 1524, Failed: 336, Inconclusive: 0, Skipped: 9
- Linux
  - .Net Core Test Count: 1857, Passed: 1510, Failed: 339, Inconclusive: 0, Skipped: 8
No reference to System.Drawing.Primitive, because System.Drawing.Primitive reference original System.Drawing on .Net Framework which may cause conficts error

I'm a poor man doesn't have a shiny mac book now, so I can't test with macosx, somebody can please tell me.