chore: update README for 1.3.0 release

README.md

@@ -35,6 +35,8 @@ Note that it's *currently* closed source. See the "Open Source Goal" section if
 | Interval Backup |     ✅     |      ✅     |      ❌        |    ✅      | ✅     |
 | Quick Switcher[^12] | ✅     |      ✅     |      ❌        |    ❌      | ✅     |
 | User Defined Language | ✅   |      ✅     |      ❌        |    ⚠️[^11] | ✅     |
+| Text Marking |        ✅     |      ✅     |      ✅        |    ✅      | ❌     |
+| HTML Export |         ✅     |     ℹ️[^13] |      ✅        |    ❌      | ✅     |
 | Editor Engine |    Scintilla  |   Scintilla |   Scintilla     | QScintilla | KTextEdit |
 | Regex Engine | QRegularExpression | Boost.Regex | QRegularExpression | Boost.Regex [^10] | QRegularExpression |
 
@@ -48,6 +50,7 @@ Note that it's *currently* closed source. See the "Open Source Goal" section if
 [^10]: According to their pre-existing legacy code and their current dynamic library, they are very likely reusing the same implementation that Notepad++ is using (BoostRegExSearch).
 [^11]: Only support keyword-level customization based on Lexilla's cpp lexer.
 [^12]: Use <kbd>Ctrl+Tab</kbd> to switch between recently viewed opened documents.
+[^13]: Via plugin.
 
 ## Open Source Goal