Updated dependency reference.

Oren (electricessence) · Oren (electricessence) · commit e026df85a130 · 2017-10-19T09:53:58.000-07:00
diff --git a/Open.Arithmetic.csproj b/Open.Arithmetic.csproj
@@ -26,7 +26,7 @@ Part of the "Open" set of libraries.</Description>
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Open.Collections" Version="1.2.0" />
+    <PackageReference Include="Open.Collections" Version="2.0.1" />
   </ItemGroup>
 
 </Project>
