Add devcontainer configs

.devcontainer/devcontainer.json

@@ -0,0 +1,38 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/ruby
+{
+	"name": "Ruby",
+	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
+	"image": "mcr.microsoft.com/devcontainers/ruby:1-3.1-bookworm",
+	"features": {
+		"ghcr.io/devcontainers/features/github-cli:1": {
+			"installDirectlyFromGitHubRelease": true,
+			"version": "latest"
+		},
+		"ghcr.io/devcontainers-extra/features/ruby-asdf:0": {
+			"version": "3.1.6"
+		}
+	},
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "bundle install",
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"castwide.solargraph"
+			]
+		}
+	},
+
+	// Configure tool-specific properties.
+	// "customizations": {},
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}

.gitignore

@@ -9,3 +9,4 @@
 /bin/
 # rspec failure tracking
 .rspec_status
+tags

Gemfile.lock

@@ -20,6 +20,7 @@ GEM
     diff-lcs (1.5.1)
     docile (1.4.1)
     e2mmap (0.1.0)
+    ffi (1.17.0-aarch64-linux-gnu)
     ffi (1.17.0-arm64-darwin)
     ffi (1.17.0-java)
     ffi (1.17.0-x86_64-darwin)
@@ -61,6 +62,8 @@ GEM
     lumberjack (1.2.10)
     method_source (1.1.0)
     nenv (0.3.0)
+    nokogiri (1.18.0-aarch64-linux-gnu)
+      racc (~> 1.4)
     nokogiri (1.18.0-arm64-darwin)
       racc (~> 1.4)
     nokogiri (1.18.0-java)
@@ -177,6 +180,7 @@ GEM
     yard (0.9.37)
 
 PLATFORMS
+  aarch64-linux
   arm64-darwin-21
   arm64-darwin-22
   arm64-darwin-23

lib/ruby_units/unit.rb

@@ -2,7 +2,7 @@
 
 require "date"
 module RubyUnits
-  # Copyright 2006-2024
+  # Copyright 2006-2025
   # @author Kevin C. Olbrich, Ph.D.
   # @see https://github.com/olbrich/ruby-units
   #