huge commit for advanced stats feature.

broke data out into its own library.
may be breaking changes with existing plugins

Data/Migrations/MySql/20180516023249_AddEloField.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using System;
+using System.Collections.Generic;
+
+namespace Data.Migrations.MySql
+{
+    public partial class AddEloField : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<double>(
+                name: "EloRating",
+                table: "EFClientStatistics",
+                nullable: false,
+                defaultValue: 0.0);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "EloRating",
+                table: "EFClientStatistics");
+        }
+    }
+}