v1.5.0

Everything Presence Pro Grid is now available directly in HACS. The headline
features: a live overview dashboard card for your Home Assistant dashboards,
an on-device activity heatmap, and text labels for your room layout.

New features

• Activity heatmap and movement trails. The live view and the overview card
  can now show an on-device activity heatmap — a rolling picture of where
  movement happens most in the room — plus live movement trails that fade in
  behind each target as it moves. Toggle the Heatmap layer on the live
  view or in the card editor. Requires updating the device firmware.
• Text labels in the furniture layout. Annotate the layout with
  free-floating text — room names, captions, notes. Labels scale with the room
  and support different fonts, real-world sizing, bold and italic, alignment,
  a text colour (with an auto-contrast option), and an optional background
  box.
• WiFi Signal diagnostic. WiFi builds now expose a WiFi Signal (RSSI)
  diagnostic entity, so you can read signal strength at the device's mounted
  location straight from Home Assistant — the quickest way to tell whether a
  device that keeps dropping off the network has a coverage problem. Requires
  updating the device firmware.

Improvements

• Furniture resizes proportionally by default. Dragging a corner handle
  keeps a furniture item's proportions; the edge handles stretch a single
  dimension when you need to match a piece that isn't the preset's shape.
• Furniture adapts to the room colour. Furniture icons automatically pick a
  light or dark shade so they stay legible whatever rest-of-room colour you
  choose.
• Overview card: cleaner out-of-coverage cells. Cells outside the sensor's
  coverage fade out on the overview card instead of showing cross-hatching.

Fixes

• Overview card keeps its width when you open its settings in the dashboard
  editor.