Switch to new μpkg package format

.github/workflows/lint.yaml

@@ -0,0 +1,18 @@
+name: Lint
+
+on:
+  push:
+    branches: ['*']
+    tags: ['!v*']
+  workflow_call: {}
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Run ShellCheck
+      uses: ludeeus/action-shellcheck@master
+      env:
+        SHELLCHECK_OPTS: -x

.github/workflows/release.yaml

@@ -0,0 +1,20 @@
+name: Release
+
+on:
+  push:
+    tags: ['v*']
+
+jobs:
+  lint:
+    uses: ./.github/workflows/lint.yaml
+    secrets: inherit
+  release:
+    needs: [lint]
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    name: Create GitHub release
+    steps:
+    - uses: orbit-online/upkg-release@v1
+      with:
+        paths: collections.sh LICENSE README.md

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 Orbit Online A/S
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -2,11 +2,15 @@
 
 Functions for handling bash arrays
 
-## `contains_elements(element, ...array)`
+## Installation
 
-Checks if an element is in an array
+See [the latest release](https://github.com/orbit-online/collections.sh/releases/latest) for instructions.
+
+## Usage
 
-### Usage
+### `contains_elements(element, ...array)`
+
+Checks if an element is in an array
 
 ```
 local arr=(1 "a b" 2)
@@ -17,12 +21,10 @@ else
 fi
 ```
 
-## `join_by(separator, ...array)`
+### `join_by(separator, ...array)`
 
 Joins all elements in the array into a single string using `separator`
 
-### Usage
-
 ```
 local arr=(1 "a b" 2)
 printf "arr joined with - is '%s'" "$(join_by - "${arr[@]}")"

upkg.json

@@ -1,3 +1,4 @@
 {
-  "assets": ["collections.sh"]
+  "$schema": "https://schemas.orbit.dev/upkg/upkg-v0.22.0.schema.json",
+  "name": "collections.sh"
 }