minor changes and stale configuration changes

.github/stale.yml

@@ -1,7 +1,7 @@
 # Number of days of inactivity before an issue becomes stale
 daysUntilStale: 60
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
+daysUntilClose: false
 # Issues with these labels will never be considered stale
 exemptLabels:
   - pinned
@@ -11,7 +11,6 @@ staleLabel: wontfix
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
   This issue has been automatically marked as stale because it has not had
-  recent activity. It will be closed if no further activity occurs. Thank you
-  for your contributions.
+  recent activity. Thank you for your contributions.
 # Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: false

Unosquare.FFME.Windows.Sample/MainWindow.MediaEvents.cs

@@ -164,7 +164,7 @@ private void OnMediaInitializing(object sender, MediaInitializingEventArgs e)
         /// </summary>
         /// <param name="sender">The source of the event.</param>
         /// <param name="e">The <see cref="MediaOpeningEventArgs"/> instance containing the event data.</param>
-        private void OnMediaOpening(object sender, MediaOpeningEventArgs e)
+        private async void OnMediaOpening(object sender, MediaOpeningEventArgs e)
         {
             // Capture a reference to the MediaOptions object for real-time change
             // This usage of MediaOptions is unsupported.
@@ -319,7 +319,7 @@ private void OnMediaOpening(object sender, MediaOpeningEventArgs e)
                 // Since the MediaElement control belongs to the GUI thread
                 // and the closed captions channel property is a dependency
                 // property, we need to set it on the GUI thread.
-                media.Dispatcher?.InvokeAsync(() =>
+                await media.Dispatcher?.InvokeAsync(() =>
                 {
                     media.ClosedCaptionsChannel = videoStream.HasClosedCaptions ?
                         CaptionsChannel.CC1 : CaptionsChannel.CCP;

Unosquare.FFME.sln

@@ -17,10 +17,12 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Support", "Support", "{8BF2
 		docfx.json = docfx.json
 		Support\ffme.png = Support\ffme.png
 		Support\ffmeplay.png = Support\ffmeplay.png
+		.github\ISSUE_TEMPLATE.md = .github\ISSUE_TEMPLATE.md
 		LICENSE = LICENSE
 		Support\nugetdoc.md = Support\nugetdoc.md
 		README.md = README.md
 		Support\readme.txt = Support\readme.txt
+		.github\stale.yml = .github\stale.yml
 		toc.yml = toc.yml
 	EndProjectSection
 EndProject

Unosquare.FFME/Commands/CommandManager.Seek.cs

@@ -5,7 +5,6 @@
     using Diagnostics;
     using Primitives;
     using System;
-    using System.Collections;
     using System.Collections.Generic;
     using System.Runtime.CompilerServices;
     using System.Threading;