v1.7.0

Changes since v1.6.0

• Make the app useable as a library
• Fix a bug in padding around emojis; add tests to ensure copyright is working properly
• Add ability to set the top left in app icon separately
• Fix documentation to make it clear how to run the utility (go install instead of go get)
• Improve file version handling
• Bump minimum Go version to 1.19
• Update CI workflow to test against Go 1.19+
• Bump gopkg.in/yaml.v3 from 3.0.0 to 3.0.1