Added Mumble version 1.3.3. (#4462)

* Added Mumble version 1.3.3.

* Removed redundant switches.

manifests/Mumble/Mumble/1.3.3.yaml

@@ -0,0 +1,32 @@
+# ================== General ==================
+Id: Mumble.Mumble
+Publisher: Mumble
+Name: Mumble
+Author: Mumble
+Description: Low-latency and high quality voice chat primarily intended for use while gaming.
+AppMoniker: mumble
+Tags: mumble, voice, foss, chat, cross-platform, voip
+
+# ================== License ==================
+Homepage: https://www.mumble.info/
+License: BSD 3 Clause
+LicenseUrl: https://raw.githubusercontent.com/mumble-voip/mumble/master/LICENSE
+
+# ================= Installer =================
+MinOSVersion: 10.0.0.0
+#Channel: stable                # Channel is not supported in this preview (5/24/2020)
+Version: 1.3.3
+
+
+InstallerType: msi
+Installers:
+  - Arch: x64
+    Url: https://github.com/mumble-voip/mumble/releases/download/1.3.3/mumble-1.3.3.winx64.msi
+    Sha256: 3B9A13EA760D416654E16AF9E892DD389E1EA8C4521430C507707ECC1AA80704
+    Scope: machine
+  #- Arch: x86                  # Support for multiple installers are not supported in this preview (5/24/2020)
+    #Url: https://github.com/mumble-voip/mumble/releases/download/1.3.2/mumble-1.3.2.msi
+    #Sha256: a5d4814cfdb2cb3e455320e3149318466f61eaa6673f99a6644e5720e5da09e4
+    #Scope: machine
+    
+# ManifestVersion: 0.1.0