Remove configuration files (#100)

dependency checker got removed long ago.
Add further files to export-ignore. This prevents those files from
distribution when installed via composer or downloaded as zip.

.gitattributes

@@ -4,8 +4,9 @@ Tests export-ignore
 .gitattributes export-ignore
 .gitignore export-ignore
 
-dependency-checker.json export-ignore
 ecs.php export-ignore
 phpcs.xml.dist export-ignore
+phpstan-baseline.neon export-ignore
 phpstan.neon export-ignore
 phpunit.xml.dist export-ignore
+rector.php export-ignore

Documentation/Changelog/2.1.0.rst

@@ -0,0 +1,27 @@
+2.1.0
+=====
+
+Breaking
+--------
+
+Nothing
+
+Features
+--------
+
+Nothing
+
+Fixes
+-----
+
+Nothing
+
+Tasks
+-----
+
+* Remove further files from distribution to not clutter target systems.
+
+Deprecation
+-----------
+
+Nothing

dependency-checker.json

@@ -1,8 +0,0 @@
-{
-    "scan-files": [
-        "ext_*.php",
-        "Configuration/*php",
-        "Configuration/Backend/*.php",
-        "Configuration/TCA/*.php"
-    ]
-}