joinmarket: 0.9.4 -> 0.9.5

Notes
- We can no longer test for `unknown error in JSON-RPC`. `jm-ob-watcher`
  now simply outputs `Starting ob-watcher`. Tested working on
  https://nixbitcoin.org/orderbook.
- Removed Agora IRC server since it is offline semi-permanently. Should
  probably also be removed upstream.
- Includes patch for
  https://github.com/JoinMarket-Org/joinmarket-clientserver/issues/1193

pkgs/python-packages/python-bitcointx/default.nix

@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "python-bitcointx";
-  version = "1.1.1.post0";
+  version = "1.1.3";
 
   src = fetchurl {
     url = "https://github.com/Simplexum/${pname}/archive/${pname}-v${version}.tar.gz";
-    sha256 = "d12593b09785a7a4ce08cb1928815c2366e9f6e4fab317267462857bf83904b0";
+    sha256 = "f0f487c29619df0e94a04f6deb3dc950ff9954c072017bd3eda90f73c24f0953";
   };
 
   patchPhase = ''