Merge pull request #49 from mishan/editor-tempdir

The node editor looked for its scratch file in /tmp on Windows

Merge pull request #59 from mishan/windows-console

Windows: no terminal on launch, and output when a terminal asks for it

Merge pull request #53 from mishan/icon-from-svg

packaging: render icons from SVG source, include icon for macOS

Merge pull request #41 from mishan/release-workflow

Release Workflow