Docs: update links, sponsors

docs/CHANGELOG.txt

@@ -394,6 +394,7 @@ Other Changes:
 - Examples: DirectX12: Move ImGui::Render() call above the first barrier to clarify its lack of effect on the graphics pipe.
 - CI: Fix testing for Windows DLL builds. (#3603, #3601) [@iboB]
 - Docs: Improved the wiki and added a https://github.com/ocornut/imgui/wiki/Useful-Widgets page. [@Xipiryon]
+  [2021/05/20: moved to https://github.com/ocornut/imgui/wiki/Useful-Extensions]
 - Docs: Split examples/README.txt into docs/BACKENDS.md and docs/EXAMPLES.md, and improved them.
 - Docs: Consistently renamed all occurrences of "binding" and "back-end" to "backend" in comments and docs.
 

docs/README.md

@@ -125,7 +125,7 @@ Officially maintained backends/bindings (in repository):
 - Frameworks: AGS/Adventure Game Studio, Amethyst, Blender, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium, GML/Game Maker Studio2, GLEQ, Godot, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, Monogame, NanoRT, nCine, Nim Game Lib, Nintendo 3DS & Switch (homebrew), Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, Photoshop, px_render, Qt/QtDirect3D, SDL_Renderer, SFML, Sokol, Unity, Unreal Engine 4, vtk, VulkanHpp, VulkanSceneGraph, Win32 GDI, WxWidgets.
 - Note that C bindings ([cimgui](https://github.com/cimgui/cimgui)) are auto-generated, you can use its json/lua output to generate bindings for other languages.
 
-[Useful widgets and extensions](https://github.com/ocornut/imgui/wiki/Useful-Widgets) wiki page:
+[Useful Extensions/Widgets](https://github.com/ocornut/imgui/wiki/Useful-Extensions) wiki page:
 - Text editors, node editors, timeline editors, plotting, software renderers, remote network access, memory editors, gizmos etc.
 
 Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
@@ -143,7 +143,7 @@ Some of the goals for 2021 are:
 
 For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/3488)!
 
-For a list of third-party widgets and extensions, check out the [Useful Widgets](https://github.com/ocornut/imgui/wiki/Useful-Widgets) wiki page.
+For a list of third-party widgets and extensions, check out the [Useful Extensions/Widgets](https://github.com/ocornut/imgui/wiki/Useful-Extensions) wiki page.
 
 Custom engine
 [![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
@@ -196,13 +196,13 @@ Sponsors
 Ongoing Dear ImGui development is currently financially supported by users and private sponsors:
 
 *Platinum-chocolate sponsors*
-- [Blizzard](https://careers.blizzard.com/en-us/openings/engineering/all/all/all/1), [Google](https://github.com/google/filament), [Nvidia](https://developer.nvidia.com/nvidia-omniverse), [Ubisoft](https://montreal.ubisoft.com/en/ubisoft-sponsors-user-interface-library-for-c-dear-imgui/)
+- [Blizzard](https://careers.blizzard.com/en-us/openings/engineering/all/all/all/1), [Google](https://github.com/google/filament), [Nvidia](https://developer.nvidia.com/nvidia-omniverse)
 
 *Double-chocolate and Salty caramel sponsors*
-- [Activision](https://careers.activision.com/c/programmingsoftware-engineering-jobs), [Aras Pranckevičius](https://aras-p.info), [Arkane Studios](https://www.arkane-studios.com), [Framefield](http://framefield.com), [Grinding Gear Games](https://www.grindinggear.com), [Kylotonn](https://www.kylotonn.com), [Next Level Games](https://www.nextlevelgames.com), [RAD Game Tools](http://www.radgametools.com/), [Supercell](https://supercell.com)
+- [Activision](https://careers.activision.com/c/programmingsoftware-engineering-jobs), [Aras Pranckevičius](https://aras-p.info), [Arkane Studios](https://www.arkane-studios.com), [Framefield](http://framefield.com), [Grinding Gear Games](https://www.grindinggear.com), [Kylotonn](https://www.kylotonn.com), [Next Level Games](https://www.nextlevelgames.com), [RAD Game Tools](http://www.radgametools.com/), [O-Net Communications (USA)](http://en.o-netcom.com), [Supercell](https://supercell.com), [Ubisoft](https://montreal.ubisoft.com/en/ubisoft-sponsors-user-interface-library-for-c-dear-imgui)
 
 Please see [detailed list of Dear ImGui supporters](https://github.com/ocornut/imgui/wiki/Sponsors) for past sponsors.
-From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations. 
+From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations.
 
 **THANK YOU to all past and present supporters for helping to keep this project alive and thriving!**
 
@@ -219,6 +219,8 @@ Developed by [Omar Cornut](https://www.miracleworld.net) and every direct or ind
 Recurring contributors (2020): Omar Cornut [@ocornut](https://github.com/ocornut), Rokas Kupstys [@rokups](https://github.com/rokups), Ben Carter [@ShironekoBen](https://github.com/ShironekoBen).
 A large portion of work on automation systems, regression tests and other features are currently unpublished.
 
+Sponsoring, support contracts and other B2B transactions are hosted and handled by [Lizardcube](https://www.lizardcube.com).
+
 Omar: "I first discovered the IMGUI paradigm at [Q-Games](https://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it."
 
 Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).

imgui_demo.cpp

@@ -1554,7 +1554,7 @@ static void ShowDemoWindowWidgets()
     // Plot/Graph widgets are not very good.
     // Consider writing your own, or using a third-party one, see:
     // - ImPlot https://github.com/epezent/implot
-    // - others https://github.com/ocornut/imgui/wiki/Useful-Widgets
+    // - others https://github.com/ocornut/imgui/wiki/Useful-Extensions
     if (ImGui::TreeNode("Plots Widgets"))
     {
         static bool animate = true;

imgui_widgets.cpp

@@ -6298,7 +6298,7 @@ bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(v
 // Plot/Graph widgets are not very good.
 // Consider writing your own, or using a third-party one, see:
 // - ImPlot https://github.com/epezent/implot
-// - others https://github.com/ocornut/imgui/wiki/Useful-Widgets
+// - others https://github.com/ocornut/imgui/wiki/Useful-Extensions
 //-------------------------------------------------------------------------
 
 int ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 frame_size)