Get 1.7.10 working with source remapping

Requires changing the 'core' version to 1.8 before compiling

.drone.yml

@@ -8,9 +8,10 @@ pipeline:
     commands:
       - curl --fail --create-dirs -o $HOME/.gradle/init.d/mirror.gradle https://maven.johni0702.de/config/gradle
       - git config --global user.email "replaymod@drone" && git config --global user.name "Drone"
-      - ./gradlew --old-gradle :1.7.10:setupCIWorkspace :jGui:1.7.10:setupCIWorkspace
-      - ./gradlew --old-gradle
       - ./gradlew --parallel
+      - ./gradlew :1.8:setCoreVersion
+      - ./gradlew --old-gradle :1.7.10:setupCIWorkspace :jGui:1.7.10:setupCIWorkspace
+      - ./gradlew --old-gradle :1.7.10:shadowJar
   archive:
     image: plugins/s3
     acl: public-read