add special commands

Added special commands:
show
restart
showvbanchat
shutdown

Updated README and CHANGELOG to reflect changes.

Minor version bump

examples/special.ps1

@@ -0,0 +1,10 @@
+Import-Module Voicemeeter
+
+try {
+    $vmr = Get-RemoteBanana
+    
+    $vmr.command.show
+    $vmr.command.restart
+    $vmr.command.showvbanchat
+}
+finally { $vmr.Logout() }