VS Code extension 0.1.5

Mermaid diagrams and a lightbox for pictures, diagrams, tables and code; the message rail groups ten messages to a bar when they would touch; the usage page says it is for this workspace only; pictures show again after a reload; a failed edit says why; errors are toasts at the top, not over the message box; the paperclip attaches any file by its path; chips wrap instead of overlapping; selection no longer hides the draft.

Needs zettcode-server>=0.1.1 (installed automatically), for the pictures in a reloaded session.