gtfsrt: support old way of track change communication (#412)

* gtfsrt: support old way of track change communication

before: only assigned stop id
now: also stop_id

.pkg

@@ -101,7 +101,7 @@
 [nigiri]
   [email protected]:motis-project/nigiri.git
   branch=master
-  commit=e56ce4329cbaebaecea21e53d66f5ef89adba5ae
+  commit=f6784d241fc6edde422e4db89ae547dc2aad319d
 [osmium]
   [email protected]:motis-project/libosmium.git
   branch=master

.pkg.lock

@@ -1,4 +1,4 @@
-8686966163401418629
+15493437720922454340
 cista a6218e9cd9da9e1c7a70c1188e2faf9e082b7f1c
 zlib fe8e13ffca867612951bc6baf114e5ac8b00f305
 boost be5235eb2258d2ec19e32546ab767a62311d9b46
@@ -29,7 +29,7 @@ abseil-cpp f2b3825f36e37fddd47c5c395096e9b1e99eca12
 protobuf 690e03babf0963d3da9615a2dae0891777842719
 unordered_dense 4f380fb1d64f1843ca2c993ed39a8342a8747e5d
 wyhash 1e012b57fc2227a9e583a57e2eacb3da99816d99
-nigiri e56ce4329cbaebaecea21e53d66f5ef89adba5ae
+nigiri f6784d241fc6edde422e4db89ae547dc2aad319d
 lua 7bb93325b26f84c7e8b51fcbd857361ce7605a1d
 luabind 9223568bbcf818ecfb1001d49f567627ee10852a
 tbb 2067af88257710d07253761655a802732a32496e
@@ -48,7 +48,7 @@ sol2 fdb0f8a60e48aa737f0a8d73edede48627f0c984
 variant 3c7fc8266bb46046b42c2dc2663f9f505f0cec28
 tiles 4a1352d5c6d3e1b777085877d1be18eed58667a2
 transfers ee017c4647cefd92349cb34404b05ba58bc112a6
-LuaJIT c89380f553d1f40cd030dda8c4096cf599dda3cd
+LuaJIT babeae2c3311bed245ee86f3e35a1f244e3da60b
 OSM-binary 0be467dc07f2ee5271fb1e61c7c364dd20f29be0
 cpp-statsd-client b60bc7bb930df664b4ab9573ad8bee80d29dc72d
 cxxopts a68479e98d6694d4bcfc7af9fc09527888a740b6
@@ -58,4 +58,4 @@ lz4 c4765545ebb14b0a56c663e21923166923f8280e
 microtar c71afe40887ae1a187ec24cedd85c765058d9978
 robin-hood-hashing bd632059ea0bb5cf444b33bdfb4eba2118300c62
 spatialite 7b8cd6447ac8632bd2c6c8ff9fbc10151742ef18
-valhalla 0c1a123f917a13994d7c2f9b9cd0533d456fef18
+valhalla 12f0a5c142afc70ad362388b03a23d46c7a61bb6