Feature Request: Custom Radars

[flexyford]

Description

vertical-collection has been a valuable addon to improve our application performance. We've recently come across a desire to use vertical-collection on a set of items that vary greatly in their height, and we've found that we want something other than StaticRadar or DyanmicRadar to get the best performance for our particular use case.

We would greatly value the ability to define our own custom Radars for a vertical-collection instance. I also hope a "Custom Radar" feature would give addon consumers the ability to experiment with different Radars for their unique use cases and be able to contribute back to the addon more easily.

Example RadarClass Usage

{{#vertical-collection items
  RadarClass=CustomRadarClass
  as |item|
}}
  {{item.name}}
{{/vertical-collection}}