Adding upstream version 0.2.2.

Signed-off-by: Daniel Baumann <daniel@debian.org>

README.md

@@ -0,0 +1,138 @@
+# deepmerge
+![test](https://github.com/TwiN/deepmerge/workflows/test/badge.svg?branch=master)
+[![Go Report Card](https://goreportcard.com/badge/github.com/TwiN/deepmerge)](https://goreportcard.com/report/github.com/TwiN/deepmerge)
+[![Go version](https://img.shields.io/github/go-mod/go-version/TwiN/deepmerge.svg)](https://github.com/TwiN/deepmerge)
+[![Go Reference](https://pkg.go.dev/badge/github.com/TwiN/deepmerge.svg)](https://pkg.go.dev/github.com/TwiN/deepmerge)
+
+Go library for deep merging YAML or JSON files.
+
+
+## Usage
+
+### YAML
+```go
+package main
+
+import (
+	"github.com/TwiN/deepmerge"
+)
+
+func main() {
+	dst := `
+debug: true
+client:
+  insecure: true
+users:
+  - id: 1
+    firstName: John
+    lastName: Doe
+  - id: 2
+    firstName: Jane
+    lastName: Doe`
+	src := `
+client:
+  timeout: 5s
+users:
+  - id: 3
+    firstName: Bob
+    lastName: Smith`
+	output, err := deepmerge.YAML([]byte(dst), []byte(src))
+	if err != nil {
+		panic(err)
+	}
+	println(string(output))
+}
+```
+
+Output:
+```yaml
+client:
+    insecure: true
+    timeout: 5s
+debug: true
+users:
+    - firstName: John
+      id: 1
+      lastName: Doe
+    - firstName: Jane
+      id: 2
+      lastName: Doe
+    - firstName: Bob
+      id: 3
+      lastName: Smith
+```
+
+### JSON
+```go
+package main
+
+import (
+	"github.com/TwiN/deepmerge"
+)
+
+func main() {
+	dst := `{
+  "debug": true,
+  "client": {
+    "insecure": true
+  },
+  "users": [
+    {
+      "id": 1,
+      "firstName": "John",
+      "lastName": "Doe"
+    },
+    {
+      "id": 2,
+      "firstName": "Jane",
+      "lastName": "Doe"
+    }
+  ]
+}`
+	src := `{
+  "client": {
+    "timeout": "5s"
+  },
+  "users": [
+    {
+      "id": 3,
+      "firstName": "Bob",
+      "lastName": "Smith"
+    }
+  ]
+}`
+	output, err := deepmerge.JSON([]byte(dst), []byte(src))
+	if err != nil {
+		panic(err)
+	}
+	println(string(output))
+}
+```
+
+Output:
+```json
+{
+  "client": {
+    "insecure": true,
+    "timeout": "5s"
+  },
+  "debug": true,
+  "users": [
+    {
+      "firstName": "John",
+      "id": 1,
+      "lastName": "Doe"
+    },
+    {
+      "firstName": "Jane",
+      "id": 2,
+      "lastName": "Doe"
+    },
+    {
+      "firstName": "Bob",
+      "id": 3,
+      "lastName": "Smith"
+    }
+  ]
+}
+```