Bump package version

ScriptableRenderPipeline/Core/package.json

 {
     "name": "com.unity.render-pipelines.core",
     "description": "Core library for Unity render pipelines.",
-    "version": "0.1.30",
+    "version": "0.1.31",
     "unity": "2018.1",
     "dependencies": {
         "com.unity.postprocessing": "0.1.8"

ScriptableRenderPipeline/HDRenderPipeline/package.json

 {
     "name": "com.unity.render-pipelines.high-definition",
     "description": "HD Render Pipeline for Unity.",
-    "version": "0.1.30",
+    "version": "0.1.31",
-        "com.unity.render-pipelines.core": "0.1.30"
+        "com.unity.render-pipelines.core": "0.1.31"
     }
 }

ScriptableRenderPipeline/LightweightPipeline/package.json

 {
     "name": "com.unity.render-pipelines.lightweight",
     "description": "Lightweight Render Pipeline for Unity.",
-    "version": "0.1.30",
+    "version": "0.1.31",
-        "com.unity.render-pipelines.core": "0.1.30"
+        "com.unity.render-pipelines.core": "0.1.31"
     }
 }

ScriptableRenderPipeline/master-package.json

 {
-    "version": "0.1.30",
+    "version": "0.1.31",
     "unity": "2018.1",
     "dependencies": {
         "com.unity.postprocessing": "0.1.8"