Puffer Card v1.2.1

Fixed

• The icon_mode field was missing from the visual editor when editing an
  existing card without an icon already set, making the option undiscoverable.
  It is now always shown.
• The chart sensor selector bug from 1.2.0 was only fixed in the card itself,
  not in the visual editor (which keeps its own separate copy of the
  configuration): on first enabling the chart, the editor's checkboxes still
  appeared empty even though the chart correctly showed all sensors. The
  editor now applies the same defaulting logic as the card.

Changed

• History chart data is now downsampled (averaged into fixed time bins,
  roughly one point per 4 px of chart width) before the smoothing curve is
  drawn. Raw History API data can be noisy with many closely-spaced state
  changes; without downsampling the smoothed curve still looked jagged. The
  chart is now visually calmer and closer to other popular history-graph
  cards, regardless of how many raw data points the sensor produced.