Open status now logged

The state of the space is now logged every time the open sign switch is flipped or whenever someone rings the doorbell. This state is published at https://umeahackerspace.se/opensignd_log.json. The format is a list of the spaceapi "state" field over time, like so:

{
 "states": [
  {
   "lastchange": 1662406258.92183,
   "open": true
  },
  {
   "lastchange": 1662406747.969841,
   "open": false,
   "message": "lunch"
  },
  {
   "lastchange": 1662406833.298129,
   "open": false
  }
 ]
}

One thing to do with this data is to implement histogram functionality ála the heatmap at mapall.space. Another interesting thing would be to plot open intensity vs season.

Finally historical open status may be available in IRC logs. If anyone happens to have logs then please convert them to the above format, or send them to me. Filtering by "<spacebot>" should be fine.