Prepare for 3.7.0 release

CHANGES.txt

@@ -1,3 +1,18 @@
+NUnit Project Loader Extension 3.7 - August 29, 2021
+
+  No new features or bug fixes but includes changes in the build script
+  to facilitate moving to the next major version of the extension, v4.0.
+
+  This is expected to be the final release of the 3.x series.
+  
+  Issues Resolved
+
+   * 17 Add functional package tests to build
+   * 18 Automate publication of packages
+   * 20 Update Cake version and get build working again
+   * 23 Refactor Cake scripts
+   * 33 Specify console versions for each test separately
+
 NUnit Project Loader Extension 3.6 - July 28, 2017
 
   Fixes several packaging errors and adds a new chocolatey package. Runners and engines

LICENSE.txt

@@ -1,4 +1,4 @@
-Copyright (c) 2016 Charlie Poole
+Copyright (c) 2016-2021 Charlie Poole
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

nunit-project-loader.sln

@@ -15,10 +15,13 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		build.cake = build.cake
 		build.ps1 = build.ps1
 		build.sh = build.sh
+		CHANGES.txt = CHANGES.txt
 		FailingAssembly.nunit = FailingAssembly.nunit
 		GitVersion.yml = GitVersion.yml
+		LICENSE.txt = LICENSE.txt
 		nunit-project-loader.nuspec = nunit-project-loader.nuspec
 		PassingAssembly.nunit = PassingAssembly.nunit
+		README.md = README.md
 	EndProjectSection
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "cake", "cake", "{1E689680-AB9D-497E-8FC3-B541A9A24EEC}"