Fix badge/counter icon not being removed correctly (#1251, PR #1252)App context menu: add "Save Image", "Copy Image", "Copy Image Address" (PR #1256)Bump default Electron from 12.0.12 to 12.0.14. Changelogs: 12.0.13, 12.0.14Maintenance: {API.md, HACKING.md} documentation, improve generate-changelog