Mark PolyfillColorPanel as deprecated and will be removed in v2.0.0

Author: marteinn

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 ### Added
 ### Changed
+- Mark PolyfillColorPanel as deprecated and will be removed in v2.0.0 (@marteinn)
 - Exclude development files from release build (@marteinn)
 - Add package description (@marteinn)
 - Add project urls in setup (@marteinn)

wagtail_color_panel/edit_handlers.py

@@ -1,3 +1,5 @@
+import warnings
+
 from wagtail.admin.panels import FieldPanel
 
 from wagtail_color_panel.widgets import ColorInputWidget, PolyfillColorInputWidget
@@ -13,6 +15,24 @@ def get_form_options(self):
 
 
 class PolyfillColorPanel(FieldPanel):
+    """
+    DEPRECATED: This panel uses the Spectrum library for IE11 compatibility.
+    Since IE11 is no longer supported by Microsoft (as of June 2022) and this
+    package requires Wagtail 6.3+ (which dropped IE11 support), please use
+    NativeColorPanel instead.
+
+    This panel will be removed in version 2.0.0.
+    """
+
+    def __init__(self, *args, **kwargs):
+        warnings.warn(
+            "PolyfillColorPanel is deprecated and will be removed in "
+            "wagtail-color-panel 2.0.0. Use NativeColorPanel instead.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        super().__init__(*args, **kwargs)
+
     def get_form_options(self):
         opts = super().get_form_options()
         opts["widgets"] = {