Copy the changes in 3.1.6 from Git notes to the change log

Replace the comment explaining how the change log should be updated with
the result of actually doing just this.

docs/changes.txt

@@ -231,35 +231,107 @@ Changes in behaviour which may result in build errors
   minimum required version is now 2005.
 
 
-3.1.6: (released 2021-06-??)
+3.1.6: (released 2022-04-04)
 ----------------------------
 
-NOTE: This file is updated only before the release, please use
+All:
 
-    $ git log --notes=changelog --format='%N' v3.1.5..|grep .
+- Add wxUILocale: CompareStrings(), GetLocalizedName() etc.
+- Add convenient wxFileName::GetAbsolutePath() helper.
+- Add support for std::string_view to wxPrintf() etc.
+- Add wxString::ToInt() and ToUInt() (Gerhard Gruber).
+- Add wxGetNativeCpuArchitectureName() (Tobias Taschner)
+- Add wxSecureZeroMemory() (Lauri Nurmi).
+- Add wxThread::SetName() (Lauri Nurmi).
+- Recognize Windows 11 and macOS 12 in wxGetOsDescription() (Tobias Taschner).
+- Significantly speed up wxMBConv iconv-based implementation (rlbxku1r).
+- Support searching from end in wxArrayString in STL build (Pavel Tyunin).
+- Update and extend list of known locales (Ulrich Telle).
+- Several improvements to parsing dates in wxDateTime (Lauri Nurmi).
+- Fix new compilation warnings with clang 13.
+- Fix warnings when building with gcc 11 and clang 12 -std=c++20.
+- Replace deprecated AC_HELP_STRING in wxwin.m4 (Alexander Bisono).
 
-      to see all the change log entries since the last release.
+All (GUI):
 
-      To update the notes, fetch them first:
+- Add wxBitmapBundle and use it throughout the entire API and in XRC.
+- Add support for using native spell checking in wxTextCtrl (iwbnwif).
+- Add support for style to wxWizard XRC handler (ousnius).
+- Add WXSUPPRESS_SIZER_FLAGS_CHECK and improve assert messages.
+- Add sort indicators support to wxListCtrl (Maarten Bent).
+- Add support for extra menu item accelerators (Alexander Koshelev)
+- Add wxDPIChangedEvent::Scale().
+- Add wxEVT_SPLITTER_SASH_POS_RESIZE (Gerhard Gruber).
+- Add wxImage::Change{Saturation,Brightness,HSV,Lightness}() (Tomay).
+- Add wxIntegerValidator ctor taking range (Simon Stone).
+- Add wxKeyEvent::IsAutoRepeat() (MArk Jessome).
+- Add wxMC_NO_AUTORESIZE wxMediaCtrl style (Scott Talbert).
+- Add wxSpinCtrl::GetTextValue().
+- Add wxSpinCtrl::SetIncrement() (Igor Korot).
+- Add wxStyledTextCtrl XRC handler (Alexander Koshelev)
+- Add wxTopLevelWindow::SetContentProtection() (Tobias Taschner).
+- Add wxWebView::RunScriptAsync() (Tobias Taschner).
+- Add wxXmlResource::LoadDocument().
+- Allow dropping multiple formats on wxDVC (Konstantin S. Matveyev)
+- Allow using any window for the visible part of wxComboCtrl.
+- Fix <big> and <small> tags handling in wxHTML (bakcsizs).
+- Fix DPI change handling in wxGrid with hidden row/column labels.
+- Fix handling of floating and resizable AUI toolbar panes (Kvaz1r).
+- Fix loading BMP files using RLE (David Costanzo).
+- Fix loading BMP files with malformed biClrUsed field (David Costanzo).
+- Implement drawing splines in wxSVGFileDC
+- Improve wxSpinCtrlDouble significant digits handling.
+- Optimize wrapping long lines in wxRichTextCtrl (Mehmet Soyturk).
 
-    $ git fetch origin refs/notes/changelog:refs/notes/changelog
+wxGTK:
 
-      then use the following command to update them locally
+- Many bug fixes for Wayland-specific problem.
+- Fix missing mouse events after enabling touch events (Thierry Bultel).
+- Allow suppressing GTK diagnostics (Marco DeFreitas).
+- Fix getting key events from wxDataViewCtrl.
+- Fix getting wxPrintData from the print dialog.
+- Fix wxMediaCtrl support when using Wayland (Dominique Martinet).
+- Generate wxKeyEvents for GDK_KEY_LaunchX keys (Dominique Martinet).
 
-    $ git notes --ref=changelog add -m 'wxPort: description.'
+wxMSW:
 
-      and finally push it to the server.
+- Add MSVS 2022 support.
+- Use Winsock 2 by default.
+- Make all native modal dialogs app modal.
+- Fix setting focus to wxWebViewEdge (PB).
+- Fix handling of ampersands in wxCheckListBox items.
+- Fix crash in wxWebViewIE::Find() (PB).
+- Fix size of the buttons when not using a manifest.
+- Fix spurious assertions when using unknown Win32 locales.
+- Fix wxDC::Blit() when using RTL layout (Dimitri Schoolwerth).
+- Fix wxDataViewModel::ItemAdded() for closed nodes (Ilya Sinitsin).
+- Fix wxStaticBox repainting in RTL (AliKet).
+- Implement getting/releasing HDC in Cairo wxGraphicsContext
+- Implement getting/releasing HDC in Direct2D wxGraphicsContext
+- Improve dark mode detection (QuentinC)
+- Use correct default printer settings (Stefan Ziegler).
 
-    $ git push origin refs/notes/changelog:refs/notes/changelog
+wxOSX:
 
-      If this fails due to a conflict because you had forgotten to
-      run git-fetch first, you can always reset your local notes
-      (LOSING YOUR CHANGES TO THEM, so make sure to make a copy)
+- Implement undo/redo for (multiline) wxTextCtrl (Dan Korn).
+- Implement wxCmpNatural() using the same order as Finder does.
+- Implement wxEVT_CHAR generation for wxDataViewCtrl.
+- Implement wxFSVolume for macOS (Tobias Taschner).
+- Allow having multiple lines in single line wxTextCtrl (Tobias Fleischer).
+- Allow setting full screen view options (Tobias Taschner).
+- Fix crash when clearing wxDataViewModel (Konstantin S. Matveyev).
+- Fix handling of drag-and-drop in native controls.
+- Fix right click event generation for wxComboBox (Daniel Kulp).
+- Fix symlinks support in wxFileSystemWatcher (Richard Gibson).
+- Fix task bar icon size in high DPI (Dominic Letz).
+- Significantly speed up creating standard system fonts.
 
-    $ git fetch origin refs/notes/changelog
-    $ git update-ref refs/notes/changelog FETCH_HEAD
+wxUniv:
 
-      and then redo "git-notes add" and git-push.
+- Many fixes to event generations, scrolling etc (Kvaz1r).
+- Fix refresh problems when scrolling with mouse wheel (Kvaz1r).
+- Many improvements and bug fixes in wxTextCtrl (Kvaz1r).
+- Fix handling mouse capture in menus (Kvaz1r).
 
 
 3.1.5: (released 2021-04-14)