Add validation rule to flag impossible oneway highways and waterways (close #6216)

data/core.yaml

@@ -1403,6 +1403,23 @@ en:
     unknown_road:
       message: "{feature} has no classification"
       reference: "Roads without a specific type may not appear in maps or routing."
+    impossible_oneway:
+      title: Impossible One-Ways
+      tip: "Find route issues with one-way features"
+      waterway:
+        connected:
+          start:
+            message: "{feature} flows away from a connected waterway"
+          end:
+            message: "{feature} flows against a connected waterway"
+          reference: "Waterway segements should all flow in the same direction."
+      highway:
+        start:
+          message: "{feature} is unreachable"
+          reference: "One-way roads must be accessible via other roads."
+        end:
+          message: "{feature} has no outlet"
+          reference: "One-way roads must lead to other roads."
     unsquare_way:
       title: Unsquare Buildings
       message: "{feature} isn't quite square"
@@ -1444,6 +1461,8 @@ en:
         title: Remove the tags
       reposition_features:
         title: Reposition the features
+      reverse_feature:
+        title: Reverse this feature
       select_preset:
         title: Select a feature type
       select_road_type:

data/deprecated.json

@@ -467,6 +467,20 @@
       "old": {"office": "real_estate"},
       "replace": {"office": "estate_agent"}
     },
+    {
+      "old": {"oneway": "1"},
+      "replace": {"oneway": "yes"}
+    },
+    {
+      "old": {"oneway": "alternate"},
+      "replace": {"oneway": "alternating"}
+    },
+    {
+      "old": {"oneway": "no;yes"}
+    },
+    {
+      "old": {"oneway": "unknown"}
+    },
     {
       "old": {"place_name": "*"},
       "replace": {"name": "$1"}

data/taginfo.json

@@ -1801,6 +1801,10 @@
     {"key": "natural", "value": "marsh", "description": "🄳 ➜ natural=wetland + wetland=marsh"},
     {"key": "natural", "value": "waterfall", "description": "🄳 ➜ waterway=waterfall"},
     {"key": "office", "value": "real_estate", "description": "🄳 ➜ office=estate_agent"},
+    {"key": "oneway", "value": "1", "description": "🄳 ➜ oneway=yes"},
+    {"key": "oneway", "value": "alternate", "description": "🄳 ➜ oneway=alternating"},
+    {"key": "oneway", "value": "no;yes", "description": "🄳"},
+    {"key": "oneway", "value": "unknown", "description": "🄳"},
     {"key": "place_name", "description": "🄳 ➜ name=*"},
     {"key": "pole", "value": "transition", "description": "🄳 ➜ location:transition=yes"},
     {"key": "postcode", "description": "🄳 ➜ addr:postcode=*"},