make Cura 4.0 API changes work

Author: Kriechi

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog of Cura-DuetRRFPlugin
 
+## v1.0.3: 2019-02-02
+  * require Cura 4.0 API compatibility
+  * if you are on Cura 3.6, please install v1.0.2 of this plugin
+
 ## v1.0.2: 2019-01-06
   * fix layout issues on Cura 4.0-beta
   * bump compatibility for Cura 4.0 / API 6.0

plugin.json

@@ -2,7 +2,7 @@
     "name": "DuetRRF",
     "author": "Thomas Kriechbaumer",
     "description": "Upload and Print to DuetWifi / DuetEthernet / Duet Maestro with RepRapFirmware.",
-    "version": "1.0.2",
-    "api": 5,
-    "supported_sdk_versions": ["5.0.0", "6.0.0"]
+    "version": "1.0.3",
+    "api": "6.0.0",
+    "supported_sdk_versions": ["6.0.0"]
 }