more README cleanup

README.md

@@ -472,34 +472,30 @@ Mainly some "missing features" for desktop apps:
       find this mentioned in any Xcode release notes though). Compiling with
       ARC disabled should also work on older Xcode versions though.
     - Various internal code cleanup things:
-        - The remaining 'top-level' static ObjC id variables in the sokol_gfx.h
-        Metal backend have been moved into the global static state structure
-        (that's the reason why __has_feature(objc_arc_fields) is required now
-        when compiling with ARC)
         - sokol_app.h had the same 'structural cleanup' as sokol_gfx.h in
-        January, all internal data has been merged into a single big
-        state structure, backend specific data has been moved closer to
-        each other in the header, and backend-specific structures and functions
-        have been named more consistently for better 'searchability'
-        - The 'mini GL' loader in the sokol_app.h Win32+WGL backend has
-        been rewritten to use X-Macros which killed a lot of redundant and
-        error-prone lines of code
+          January, all internal state (including ObjC id's) has been merged into
+          a single big state structure. Backend specific struct declarations
+          have been moved closer together in the header, and
+          backend-specific structures and functions have been named more
+          consistently for better 'searchability'
+        - The 'mini GL' loader in the sokol_app.h Win32+WGL backend has been
+          rewritten to use X-Macros (less redundant lines of code)
         - All macOS and iOS code has been revised and cleaned up
-        - On macOS a workaround for a (what looks like) post-Catalina NSOpenGLView
-        issue has been added: if the sokol_app.h window doesn't fit on
-        screen (and was thus 'clamped' by Cocoa) *AND* the content-size was
-        not set to native Retina resolution, the initial content size was
-        reported as if it was in Retina resolution. This caused an empty screen
-        to be rendered in the imgui-sapp demo. The workaround is to hook into
-        the NSOpenGLView reshape event at which point the reported content
-        size is correct.
-        - On macOS and iOS, the various 'view delegate' objects have been removed,
-        and rendering happens instead in the subclasses of MTKView, GLKView
-        and NSOpenGLView.
+        - On macOS a workaround for a (what looks like) post-Catalina
+          NSOpenGLView issue has been added: if the sokol_app.h window doesn't
+          fit on screen (and was thus 'clamped' by Cocoa) *AND* the
+          content-size was not set to native Retina resolution, the initial
+          content size was reported as if it was in Retina resolution. This
+          caused an empty screen to be rendered in the imgui-sapp demo. The
+          workaround is to hook into the NSOpenGLView reshape event at which
+          point the reported content size is correct.
+        - On macOS and iOS, the various 'view delegate' objects have been
+          removed, and rendering happens instead in the subclasses of MTKView,
+          GLKView and NSOpenGLView.
         - On macOS and iOS, there's now proper cleanup code in the
-        applicationWillTerminate callback (although note that on iOS this function isn't
-        guaranteed to be called, because an application can also simply be
-        killed by the operating system.
+          applicationWillTerminate callback (although note that on iOS this
+          function isn't guaranteed to be called, because an application can
+          also simply be killed by the operating system.
 
 - **22-Jun-2020**: The X11/GLX backend in sokol_app.h now has (soft-)fullscreen
 support, bringing the feature on par with Windows and macOS. Many thanks to