Update comment and change log after MSW wxIconBundle improvements

It is now possible to load icons from a bundle too.

docs/changes.txt

@@ -154,6 +154,7 @@ wxGTK:
 wxMSW:
 
 - Add support for building with Microsoft Visual Studio 2017 (Tobias Taschner).
+- Allow loading icons from resources in wxIconBundle (PB).
 - Enable wxStackWalker in MinGW64 builds.
 - Fix crash when using wxCHMHelpController() in 64 bit builds (Xlord2).
 - Fix wxSpinCtrl appearance: show arrows inside the control (Catalin Raceanu).

include/wx/iconbndl.h

@@ -21,9 +21,7 @@ class WXDLLIMPEXP_FWD_BASE wxInputStream;
 
 WX_DECLARE_EXPORTED_OBJARRAY(wxIcon, wxIconArray);
 
-// this class can't load bitmaps of type wxBITMAP_TYPE_ICO_RESOURCE,
-// if you need them, you have to load them manually and call
-// wxIconCollection::AddIcon
+// Load icons of multiple sizes from files or resources (MSW-only).
 class WXDLLIMPEXP_CORE wxIconBundle : public wxGDIObject
 {
 public: