(#358) StandardColorParsers: Dictionary is now readonly

Author: ForNeVeR

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
   - .NET Framework 4.6.2 or later,
   - .NET 6.0 and later.
 - **(Breaking change.)** `WpfMath.Colors.IColorParser::Parse` now accepts `IReadOnlyList` instead of `IEnumerable`.
+- **(Minor breaking change.)** `XamlMath.Colors.StandardColorParsers::Dictionary` public field is now `readonly`.
 
 ### Removed
 - **(Breaking change.)** Delete the `TexRenderer` class. Use extension methods from `WpfMath.Rendering.WpfTeXFormulaExtensions` and `WpfMath.Rendering.TeXFormulaExtensions` to replace its functionality in your code.

src/XamlMath.Shared/Colors/StandardColorParsers.cs

@@ -4,8 +4,7 @@ namespace XamlMath.Colors;
 
 public static class StandardColorParsers
 {
-    // TODO[#358]: Make readonly
-    public static IReadOnlyDictionary<string, IColorParser> Dictionary = new Dictionary<string, IColorParser>
+    public static readonly IReadOnlyDictionary<string, IColorParser> Dictionary = new Dictionary<string, IColorParser>
     {
         ["ARGB"] = new IntegerRgbColorParser(AlphaChannelMode.AlphaFirst),
         ["argb"] = new FloatRgbColorParser(AlphaChannelMode.AlphaFirst),