Update composer.json

composer.json

 {
-  "name": "sgalinski/df_tools",
+  "name": "sgalinski/df-tools",
   "type": "typo3-cms-extension",
   "description": "Contains some useful tools like a testing tool for redirects, a link checker, a back link checker and a content comparison tool between the same or different urls. Furthermore there is full scheduler support for all tests and synchronization tasks.",
   "homepage": "https://www.sgalinski.de",
   "license": ["GPL-2.0+"],
-  "version": "2.0.4",
+  "version": "2.0.5",
   "support": {
     "issues": "https://forge.typo3.org/projects/extension-df_tools/issues"
   },
   "require": {
-    "typo3/cms-core": "*"
+    "typo3/cms-core": "^7.6"
+  },
+  "replace": {
+	"df_tools": "self.version"
   },
   "autoload": {
     "psr-4": {