Update TunnelKit

Fix deadlock on shutdown again.

Podfile

@@ -8,8 +8,8 @@ $tunnelkit_name = 'TunnelKit'
 $tunnelkit_specs = ['Protocols/OpenVPN', 'Extra/LZO']
 
 def shared_pods
-    pod_version $tunnelkit_name, $tunnelkit_specs, '~> 2.0.2'
-    #pod_git $tunnelkit_name, $tunnelkit_specs, 'a4333eaafe33bf88c3b2ec3a3b8c4a5ceba9203e'
+    #pod_version $tunnelkit_name, $tunnelkit_specs, '~> 2.0.2'
+    pod_git $tunnelkit_name, $tunnelkit_specs, 'a2b6b90'
     #pod_path $tunnelkit_name, $tunnelkit_specs, '..'
     pod 'SSZipArchive'
 end

Podfile.lock

@@ -3,13 +3,13 @@ PODS:
   - OpenSSL-Apple (1.1.0j.2)
   - SSZipArchive (2.2.1)
   - SwiftyBeaver (1.7.0)
-  - TunnelKit/AppExtension (2.0.2):
+  - TunnelKit/AppExtension (2.0.3):
     - SwiftyBeaver
     - TunnelKit/Core
-  - TunnelKit/Core (2.0.2):
+  - TunnelKit/Core (2.0.3):
     - SwiftyBeaver
-  - TunnelKit/Extra/LZO (2.0.2)
-  - TunnelKit/Protocols/OpenVPN (2.0.2):
+  - TunnelKit/Extra/LZO (2.0.3)
+  - TunnelKit/Protocols/OpenVPN (2.0.3):
     - OpenSSL-Apple (~> 1.1.0j.2)
     - TunnelKit/AppExtension
     - TunnelKit/Core
@@ -17,8 +17,8 @@ PODS:
 DEPENDENCIES:
   - MBProgressHUD
   - SSZipArchive
-  - TunnelKit/Extra/LZO (~> 2.0.2)
-  - TunnelKit/Protocols/OpenVPN (~> 2.0.2)
+  - TunnelKit/Extra/LZO (from `https://github.com/passepartoutvpn/tunnelkit`, commit `a2b6b90`)
+  - TunnelKit/Protocols/OpenVPN (from `https://github.com/passepartoutvpn/tunnelkit`, commit `a2b6b90`)
 
 SPEC REPOS:
   https://github.com/cocoapods/specs.git:
@@ -26,15 +26,24 @@ SPEC REPOS:
     - OpenSSL-Apple
     - SSZipArchive
     - SwiftyBeaver
-    - TunnelKit
+
+EXTERNAL SOURCES:
+  TunnelKit:
+    :commit: a2b6b90
+    :git: https://github.com/passepartoutvpn/tunnelkit
+
+CHECKOUT OPTIONS:
+  TunnelKit:
+    :commit: a2b6b90
+    :git: https://github.com/passepartoutvpn/tunnelkit
 
 SPEC CHECKSUMS:
   MBProgressHUD: e7baa36a220447d8aeb12769bf0585582f3866d9
   OpenSSL-Apple: e88e1eb314acb4a05e2348069790c4aa49f6d319
   SSZipArchive: 8e859da2520142e09166bc9161967db296e9d02f
   SwiftyBeaver: 4cc0080d2e23f980652e28978db11a5c9da39165
-  TunnelKit: e36d22b156bc17e51cfe0077caf20873688999df
+  TunnelKit: c5068cf6c4296e96df3d359b88528810ed0824cb
 
-PODFILE CHECKSUM: bf84c8191603e873852ea62dce32e4c271ffa9c4
+PODFILE CHECKSUM: a432b5b78105cf796c0c7501501ff38b48075d00
 
 COCOAPODS: 1.6.2