diff --git a/.github/release-drafter.yml b/.github/release-drafter.yml
index 27bcee3f..937faadd 100644
--- a/.github/release-drafter.yml
+++ b/.github/release-drafter.yml
@@ -1,3 +1,4 @@
+# See https://github.com/release-drafter/release-drafter#configuration
 template: |
   ## What’s Changed
 
diff --git a/.github/workflows/bundler.yml b/.github/workflows/bundler.yml
new file mode 100644
index 00000000..107fac9c
--- /dev/null
+++ b/.github/workflows/bundler.yml
@@ -0,0 +1,43 @@
+name: Bundler
+
+on: create
+
+jobs:
+  autocommit:
+    name: Update to stable dependencies
+    if: startsWith(github.ref, 'refs/heads/release/')
+    runs-on: ubuntu-latest
+    container:
+      image: atk4/image:latest # https://github.com/atk4/image
+    steps:
+      - uses: actions/checkout@master
+      - run: echo ${{ github.ref }}
+      - name: Update to stable dependencies
+        run: |
+          # replaces X keys with X-release keys
+          jq '. as $in | reduce (keys_unsorted[] | select(endswith("-release")|not)) as $k ({}; . + {($k) : (($k + "-release") as $kr | $in | if has($kr) then .[$kr] else .[$k] end) } )' < composer.json > tmp && mv tmp composer.json
+          v=$(echo ${{ github.ref }} | cut -d / -f 4)
+          echo "::set-env name=version::$v"
+
+      - uses: teaminkling/autocommit@master
+        with:
+          commit-message: Setting release dependencies
+      - uses: ad-m/github-push-action@master
+        with:
+          branch: ${{ github.ref }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: pull-request
+        uses: romaninsh/pull-request@master
+        with:
+          source_branch: "release/${{ env.version }}"
+          destination_branch: "master"          # If blank, default: master
+          pr_title: "Releasing ${{ env.version }} into master"
+          pr_body: |
+            - [ ] Review changes (must include stable dependencies)
+            - [ ] Merge this PR into master (will delete ${{ github.ref }})
+            - [ ] Go to Releases and create TAG from master
+            Do not merge master into develop
+          pr_reviewer: "romaninsh"
+          pr_assignee: "romaninsh"
+          github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index 59fb9817..68fcd9a7 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -11,6 +11,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Drafts your next Release notes as Pull Requests are merged into "master"
-      - uses: toolmantim/release-drafter@v5.2.0
+      - uses: toolmantim/release-drafter@master
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index 3284891b..cf671a36 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -1,7 +1,12 @@
 name: Unit Testing
 
 on:
-  pull_request
+  pull_request:
+    branches: '*'
+  push:
+    branches:
+      - master
+      - develop
 
 jobs:
   unit-test:
diff --git a/README.md b/README.md
index 29e71132..13834f9f 100644
--- a/README.md
+++ b/README.md
@@ -2,14 +2,11 @@
 
 **Collection of PHP Traits for designing object-oriented frameworks.**
 
-[![Build Status](https://travis-ci.org/atk4/core.png?branch=develop)](https://travis-ci.org/atk4/core)
+![Build](https://github.com/atk4/core/workflows/Unit%20Testing/badge.svg)
 [![Code Climate](https://codeclimate.com/github/atk4/core/badges/gpa.svg)](https://codeclimate.com/github/atk4/core)
 [![StyleCI](https://styleci.io/repos/57242416/shield)](https://styleci.io/repos/57242416)
 [![CodeCov](https://codecov.io/gh/atk4/core/branch/develop/graph/badge.svg)](https://codecov.io/gh/atk4/core)
 [![Test Coverage](https://codeclimate.com/github/atk4/core/badges/coverage.svg)](https://codeclimate.com/github/atk4/core/coverage)
-[![Issue Count](https://codeclimate.com/github/atk4/core/badges/issue_count.svg)](https://codeclimate.com/github/atk4/core)
-
-[![License](https://poser.pugx.org/atk4/core/license)](https://packagist.org/packages/atk4/core)
 [![GitHub release](https://img.shields.io/github/release/atk4/core.svg?maxAge=2592000)](CHANGELOG.md)
 
 
diff --git a/composer.json b/composer.json
index a32f3948..7fde8761 100644
--- a/composer.json
+++ b/composer.json
@@ -1,42 +1,51 @@
 {
-    "name": "atk4/core",
-    "type": "library",
-    "description": "Agile Core - collection of PHP Traits for designing object-oriented frameworks",
-    "keywords": ["php", "framework", "trains", "agile toolkit"],
-    "homepage": "https://github.com/atk4/core",
-    "license": "MIT",
-    "minimum-stability": "dev",
-    "prefer-stable": true,
-    "authors": [
-        {
-            "name": "Romans Malinovskis",
-            "email": "romans@agiletoolkit.org",
-            "homepage": "https://nearly.guru/"
-        }
-    ],
-    "require": {
-        "php": ">=7.2.0",
-        "psr/log": "~1.0",
-        "ext-json": "*"
-    },
-    "require-dev": {
-        "phpunit/phpunit": "*",
-        "symfony/yaml": "~2.1|~3.0|~4.0",
-        "satooshi/php-coveralls": "^1.0",
-        "codeclimate/php-test-reporter": "*",
-        "symfony/contracts": "^1.1",
-        "atk4/data": "dev-develop"
-    },
-    "replace": {
-        "atk4/core": "self.version"
-    },
-    "suggest": {
-        "symfony/yaml": "~2.1|~3.0|~4.0"
-    },
-    "autoload": {
-        "psr-4": {"atk4\\core\\":"src/"}
-    },
-    "autoload-dev": {
-        "psr-4": {"atk4\\core\\tests\\":"tests/"}
+  "name": "atk4/core",
+  "type": "library",
+  "description": "Agile Core - collection of PHP Traits for designing object-oriented frameworks",
+  "keywords": [
+    "php",
+    "framework",
+    "traits",
+    "agile toolkit"
+  ],
+  "homepage": "https://github.com/atk4/core",
+  "license": "MIT",
+  "minimum-stability": "dev",
+  "prefer-stable": true,
+  "authors": [
+    {
+      "name": "Romans Malinovskis",
+      "email": "romans@agiletoolkit.org",
+      "homepage": "https://nearly.guru/"
     }
+  ],
+  "require": {
+    "php": ">=7.2.0",
+    "psr/log": "~1.0",
+    "ext-json": "*"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "*",
+    "symfony/yaml": "~2.1|~3.0|~4.0",
+    "satooshi/php-coveralls": "^1.0",
+    "codeclimate/php-test-reporter": "*",
+    "symfony/contracts": "^1.1",
+    "atk4/data": "^2.0"
+  },
+  "replace": {
+    "atk4/core": "self.version"
+  },
+  "suggest": {
+    "symfony/yaml": "~2.1|~3.0|~4.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "atk4\\core\\": "src/"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "atk4\\core\\tests\\": "tests/"
+    }
+  }
 }
diff --git a/src/CollectionTrait.php b/src/CollectionTrait.php
index 6635277b..ca62b6cc 100644
--- a/src/CollectionTrait.php
+++ b/src/CollectionTrait.php
@@ -54,7 +54,7 @@ public function _addIntoCollection(string $name, object $object, string $collect
                 'Object with requested name already exist in collection',
                 'name'      => $name,
                 'collection'=> $collection,
-                ]);
+            ]);
         }
         $this->{$collection}[$name] = $object;
 
diff --git a/src/ConfigTrait.php b/src/ConfigTrait.php
index d01bc028..6bec6f97 100644
--- a/src/ConfigTrait.php
+++ b/src/ConfigTrait.php
@@ -94,7 +94,7 @@ public function readConfig($files = ['config.php'], $format = 'php')
             $configs[] = $tempConfig;
         }
 
-        $this->config = array_merge_recursive($this->config, ...$configs);
+        $this->config = array_replace_recursive($this->config, ...$configs);
 
         return $this;
     }
diff --git a/src/DynamicMethodTrait.php b/src/DynamicMethodTrait.php
index 75e30308..ecc67edb 100644
--- a/src/DynamicMethodTrait.php
+++ b/src/DynamicMethodTrait.php
@@ -30,10 +30,10 @@ public function __call(string $method, $arguments)
 
         throw new Exception([
             'Method '.$method.' is not defined for this object',
-                'class'     => get_class($this),
-                'method'    => $method,
-                'arguments' => $arguments,
-            ]);
+            'class'     => get_class($this),
+            'method'    => $method,
+            'arguments' => $arguments,
+        ]);
     }
 
     /**