v1.2 has publish！add BarrierLine

What it update:

• add BarrierLine
  the example you can see example

You can install nuget:

v1.1 has publish, add new api

What it update:

• new constraint api like
  fromView.LeftToLeft(toView).TopToTop(toView);
  more example you can see example

You can install nuget:

First version have publish！

What it update:

• convert constraintlayout.core to c#
• create constraintlayout for wpf

You can install nuget: