Mitcad 0.12.0: designs in any web browser, a floating window layout without a solid bar, BUILD with fewer clicks

Web viewer

• File › Export › Web page writes a design as one HTML file that opens in
  any browser, offline: colours and materials, the component tree, named
  views, measuring, and a person to walk through the model (Shift runs,
  the right mouse button passes walls), also on a phone or tablet.
• File › Project › Web Viewer gives a project a web folder: an index of
  its designs with thumbnails and a page per design, updated on each Save
  and kept in the project's versions.

Window

• Windows and Linux start in the Floating layout with the Browser's Rows
  background; Preferences can switch both, also while Docked.
• In the Floating layout on Windows and Linux only the menu bar stays at
  the top; the title row's controls and each toolbar group float over the
  view, and clicks between them reach the view.
• The Browser card grows with its rows down to the timeline before it
  scrolls; in the Rows background its scroll bar is on the left.
• A design opens with the root active; a design whose tree is longer than
  the Browser opens with its components folded. Collapse All keeps the
  root open.

BUILD

• A square corner on a profile's end lies on the end face, flush with the
  outer side, without a mitre; corners at other angles are mitred.
• The part and the connector are chosen from a picture tile that opens
  the part picker; Placement and Length are icon buttons; the More button
  is gone.