diff --git a/.travis.yml b/.travis.yml
index cb233877e..6c517751d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,7 +21,7 @@ before_install: |
 
 # Install semantic-release
 before_script:
-  - yarn global add @conveyal/maven-semantic-release semantic-release
+  - yarn global add @conveyal/maven-semantic-release semantic-release@15
 
 # Replace Travis's default build step.
 # Run all Maven phases at once up through verify, install, and deploy.
diff --git a/pom.xml b/pom.xml
index ebc9f3c57..bcaeb8b5c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -261,12 +261,14 @@
       <groupId>org.hamcrest</groupId>
       <artifactId>java-hamcrest</artifactId>
       <version>2.0.0.0</version>
+      <scope>test</scope>
     </dependency>
     <!-- Snapshotting library for testing -->
     <dependency>
-      <groupId>com.github.Zenika</groupId>
+      <groupId>com.github.conveyal</groupId>
       <artifactId>java-snapshot-matcher</artifactId>
-      <version>7e6ed4049eb637334e56f84bdd23ea74da05f141</version>
+      <version>3495b32f7b4d3f82590e0a2284029214070b6984</version>
+      <scope>test</scope>
     </dependency>
     <!-- Disk-backed storage that looks like a Java map. -->
     <dependency>
diff --git a/src/main/java/com/conveyal/gtfs/loader/Field.java b/src/main/java/com/conveyal/gtfs/loader/Field.java
index 49d312be2..2440c4624 100644
--- a/src/main/java/com/conveyal/gtfs/loader/Field.java
+++ b/src/main/java/com/conveyal/gtfs/loader/Field.java
@@ -91,7 +91,6 @@ public String getSqlDeclaration() {
         return String.join(" ", name, getSqlTypeName());
     }
 
-    // TODO test for input with tabs, newlines, carriage returns, and slashes in it.
     protected static ValidateFieldResult<String> cleanString (String string) {
         return cleanString(new ValidateFieldResult<>(string));
     }
@@ -106,7 +105,12 @@ protected static ValidateFieldResult<String> cleanString (ValidateFieldResult<St
                 result.clean = result.clean.replace(illegalChar.illegalSequence, illegalChar.replacement);
                 // We don't know the Table or line number here, but when the errors bubble up, these values should be
                 // assigned to the errors.
-                result.errors.add(NewGTFSError.forFeed(NewGTFSErrorType.ILLEGAL_FIELD_VALUE, illegalChar.description));
+                if (!illegalChar.illegalSequence.equals("\\")) {
+                    // Do not include error entry for unescaped backslash. While this character
+                    // sequence is problematic for Postgres, it is not technically an illegal
+                    // value according to the GTFS specification.
+                    result.errors.add(NewGTFSError.forFeed(NewGTFSErrorType.ILLEGAL_FIELD_VALUE, illegalChar.description));
+                }
             }
         }
         return result;
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchAgencies.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchAgencies-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchAgencies.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchAgencies-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchCalendars.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchCalendars-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchCalendars.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchCalendars-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchErrors.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchErrors-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchErrors.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchErrors-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFares.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFares-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFares.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFares-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeed.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeed-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeed.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeed-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedInfo.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedInfo-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedInfo.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedInfo-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedRowCounts.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedRowCounts-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedRowCounts.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchFeedRowCounts-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntities.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntities-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntities.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntities-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntitiesWithoutLimits.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntitiesWithoutLimits-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntitiesWithoutLimits.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchMultiNestedEntitiesWithoutLimits-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchNestedEntityWithLimit.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchNestedEntityWithLimit-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchNestedEntityWithLimit.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchNestedEntityWithLimit-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchPatterns.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchPatterns-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchPatterns.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchPatterns-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutes.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutes-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutes.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutes-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutesAndFilterTripsByDateAndTime.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutesAndFilterTripsByDateAndTime-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutesAndFilterTripsByDateAndTime.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchRoutesAndFilterTripsByDateAndTime-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchServices.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchServices-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchServices.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchServices-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopTimes.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopTimes-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopTimes.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopTimes-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopWithChildren.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopWithChildren-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopWithChildren.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopWithChildren-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStops.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStops-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStops.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStops-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopsWithoutParentStationColumn.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopsWithoutParentStationColumn-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopsWithoutParentStationColumn.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchStopsWithoutParentStationColumn-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchTrips.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchTrips-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchTrips.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canFetchTrips-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsInput.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsInput-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsInput.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsInput-0.json
diff --git a/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsKeyValue.json b/src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsKeyValue-0.json
similarity index 100%
rename from src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsKeyValue.json
rename to src/test/resources/snapshots/com/conveyal/gtfs/graphql/GTFSGraphQLTest/canSanitizeSQLInjectionSentAsKeyValue-0.json