v0.2.4: verify and declare NetBox 4.7.1 compatibility

Went through NetBox 4.7's release notes for breaking/plugin-relevant
changes and checked each one that could plausibly affect this plugin
against the actual v4.7.1 source rather than assuming:

- Rack.form_factor/width/airflow/outer_* are deprecated (removal
  planned for v5.0) but still present and behave the same - the
  plugin's GEOMETRY_FIELDS copying is unaffected.
- ChoiceSet's CHOICES now accepts a new Choice object, but the
  metaclass explicitly still supports the legacy (value, label, color)
  tuple format this plugin's own choices.py uses - confirmed by
  reading utilities/choices.py's updated register() logic directly.
- register_model_view, ViewTab, get_model_urls, PluginConfig's
  relative resource-path resolution, PortTemplateMapping/
  PortMappingBase (patch panel front/rear sync),
  Cable/CableTermination/CabledObjectModel (rack-import cable copy),
  NetBoxModel/NetBoxModelForm/NetBoxModelFilterSet/NetBoxModelViewSet,
  PluginMenu*, ColorField, DynamicModelChoiceField, TagFilterField,
  CSVChoiceField/CSVModelChoiceField: all unchanged or only gained
  additive mixins.
- django-tables2 v3's removed RelatedLinkColumn and the removed
  querystring tag aren't used anywhere in this plugin. The MPTT->ltree
  migration doesn't touch any model this plugin manipulates directly.

No source changes were required. Raised max_version from 4.6.99 to
4.7.99 to reflect the verified range; left it there rather than
guessing forward to an unreleased 4.8.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,22 @@
 # Changelog
 
+## 0.2.4
+
+- Verified compatibility with NetBox 4.7.1 and raised `max_version` to `4.7.99`
+  accordingly (was `4.6.99`). Checked every area 4.7's release notes call out as
+  breaking or plugin-relevant against the actual 4.7.1 source: the `Rack` model's
+  `form_factor`/`width`/`airflow`/`outer_*` fields (deprecated, not removed),
+  `ChoiceSet`'s `Choice`-object refactor (the legacy `(value, label, color)` tuple
+  format this plugin's own choices use is explicitly still supported),
+  `register_model_view`/`ViewTab`/`get_model_urls`, `PluginConfig` resource-path
+  resolution, `PortTemplateMapping`/`PortMappingBase` (the patch-panel front/rear
+  mapping this plugin's component sync reads), `Cable`/`CableTermination`/
+  `CabledObjectModel` (the rack-import cable copy), and the `NetBoxModel*`/
+  `PluginMenu*`/`ColorField`/`DynamicModelChoiceField` base classes. No code changes
+  were needed - django-tables2's `RelatedLinkColumn` removal and the removed
+  `querystring` tag don't apply (unused), and the MPTT→ltree migration doesn't touch
+  anything this plugin manipulates directly.
+
 ## 0.2.3
 
 - Fix: dragging a device from front to rear (or back) made it invisible mid-drag - it