Oct 16, 2018 · Feb 12, 2018 · Jun 12, 2018
diff --git a/AUTHORS.md b/AUTHORS.md
 -   David Lechner ([@dlech](https://github.com/dlech))
 -   Dmitriy Se ([@dmitriyse](https://github.com/dmitriyse))
 -   He-chien Tsai ([@t3476](https://github.com/t3476))
 -   Jan Krivanek ([@jakrivan](https://github.com/jakrivan))
 -   Jeff Reback ([@jreback](https://github.com/jreback))
 -   Joe Frayne ([@jfrayne](https://github.com/jfrayne))
 -   John Burnett ([@johnburnett](https://github.com/johnburnett))
diff --git a/CHANGELOG.md b/CHANGELOG.md
 -   Added `clr.GetClrType` (#432, #433)
 -   Allowed passing `None` for nullable args (#460)
 -   Added keyword arguments based on C# syntax for calling CPython methods (#461)
 -   Added detailed comments about aproaches and dangers to handle multi-app-domains (#538)

 ### Changed

diff --git a/src/runtime/assemblymanager.cs b/src/runtime/assemblymanager.cs
    {
        // modified from event handlers below, potentially triggered from different .NET threads
        // therefore this should be a ConcurrentDictionary
        //
        // WARNING: Dangerous if cross-app domain usage is ever supported
        //    Reusing the dictionary with assemblies accross multiple initializations is problematic.
        //    Loading happens from CurrentDomain (see line 53). And if the first call is from AppDomain that is later unloaded,
        //    than it can end up referring to assemblies that are already unloaded (default behavior after unload appDomain -
        //     unless LoaderOptimization.MultiDomain is used);
        //    So for multidomain support it is better to have the dict. recreated for each app-domain initialization
        private static ConcurrentDictionary<string, ConcurrentDictionary<Assembly, string>> namespaces =
            new ConcurrentDictionary<string, ConcurrentDictionary<Assembly, string>>();
        //private static Dictionary<string, Dictionary<string, string>> generics;
Original file line number	Diff line number	Diff line change
Expand Up		@@ -23,6 +23,7 @@
		- David Lechner ([@dlech](https://github.com/dlech))
		- Dmitriy Se ([@dmitriyse](https://github.com/dmitriyse))
		- He-chien Tsai ([@t3476](https://github.com/t3476))
		- Jan Krivanek ([@jakrivan](https://github.com/jakrivan))
		- Jeff Reback ([@jreback](https://github.com/jreback))
		- Joe Frayne ([@jfrayne](https://github.com/jfrayne))
		- John Burnett ([@johnburnett](https://github.com/johnburnett))
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -22,6 +22,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
		- Added `clr.GetClrType` (#432, #433)
		- Allowed passing `None` for nullable args (#460)
		- Added keyword arguments based on C# syntax for calling CPython methods (#461)
		- Added detailed comments about aproaches and dangers to handle multi-app-domains (#538)

		### Changed

Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -17,6 +17,13 @@ internal class AssemblyManager
		{
		// modified from event handlers below, potentially triggered from different .NET threads
		// therefore this should be a ConcurrentDictionary
		//
		// WARNING: Dangerous if cross-app domain usage is ever supported
		// Reusing the dictionary with assemblies accross multiple initializations is problematic.
		// Loading happens from CurrentDomain (see line 53). And if the first call is from AppDomain that is later unloaded,
		// than it can end up referring to assemblies that are already unloaded (default behavior after unload appDomain -
		// unless LoaderOptimization.MultiDomain is used);
		// So for multidomain support it is better to have the dict. recreated for each app-domain initialization
		private static ConcurrentDictionary<string, ConcurrentDictionary<Assembly, string>> namespaces =
		new ConcurrentDictionary<string, ConcurrentDictionary<Assembly, string>>();
		//private static Dictionary<string, Dictionary<string, string>> generics;
Expand Down