Removed redirecting functions/enums names that were marked obsolete in 1.52 (October 2017).

- Begin() [old 5 args version]     -> use Begin() [3 args], use SetNextWindowSize() SetNextWindowBgAlpha() if needed
- IsRootWindowOrAnyChildHovered()  -> use IsWindowHovered(ImGuiHoveredFlags_RootAndChildWindows)
- AlignFirstTextHeightToWidgets()  -> use AlignTextToFramePadding();
- SetNextWindowPosCenter()         -> use SetNextWindowPos() with a pivot of (0.5f, 0.5f)
- ImFont::Glyph                    -> use ImFontGlyph
If you were still using the old names, read "API Breaking Changes" section of imgui.cpp to find out the new names or equivalent features, or see how they were implemented until 1.73.

imstb_truetype.h

@@ -1,4 +1,4 @@
-// [DEAR IMGUI] 
+// [DEAR IMGUI]
 // This is a slightly modified version of stb_truetype.h 1.20.
 // Mostly fixing for compiler and static analyzer warnings.
 // Grep for [DEAR IMGUI] to find the changes.