Preloading

[moichim]

Upon every request, there should be skeletons:

• histogram
• range
• instances

Registry should expose information about pending requests:

• number of groups & instances

Instance skeleton should be 4:3 because all thermograms have this aspect ratio.

[moichim]

Requests should be exposed as a property in loading state.

Loading state should finish only after minmax is updated. Now it is after images ate loaded.

Intended flow:

• loading = true

Exposes groups & number of images in them.
Loading ends only after the minmax and hostogram and range are updated.

Perhaps there should be another property:
Status
0 idle
1 loading
2 processing
3 ready
4 error

Requests and instances should be stored in this property. Minmax and range included.

[moichim]

Errors in Thermal loader should be stored in status property and eventually displayed.

[moichim]

There may be a dialogue upon loading. Sequences: parse as individual images or as s sequence?